How to find any or all DHCP server or servers on your network without download software using command line

After searching high and low, I thought I would share some commands that will allow you to find all active DHCP servers on your network.

There is software like FIND DHCP SERVER however there are some incompatibilities we have found on some operating systems.

Temporarily disable your production DHCP server and see if other servers respond.

You can get the IP address of the server by running ipconfig /all on a windows machine, and then you can get the MAC address by looking for that IP address using arp -a.

Running a simple COMMAND PROMPT in windows and the command line : ipconfig /all | find /i “DHCP Server”

You will be granted with the following results.

How to find a dhcp server

Note that you can replace DHCP SERVER with SERVER and it will display all servers on the network.

IMPORTANT NOTE: Your IP must be set by DHCP to retrieve this information otherwise it will not show up. Also this command will show even virtual NIC DHCP servers as well.


How to fix iphone water damage without rice where cannot turn off or on and screen not working


(firstly I thought the picture to be appropriate considering this true story)

You might laugh at me but I was having a nanny nap with my son, and as I was drifting off, I went to put the phone on his bedside table.

I realized that the table should have been lower than where my hand stopped and then fully waking and realizing, I was putting the phone into a fish tank.
Being so tired, I put the phone down and didn’t even turn it off. (which that should be the first thing you do with water damage).

When I woke in the morning it would not turn on (even though about 80% battery left) – there was still water dripping out of power and sound buttons (not good!)
Plugged in the power and turned on but kept rebooting so I quickly powered back off.

Stuck the phone in rice for a few hours and still no good. Even got a heat gun over the phone.

This is where it went well and this is 12 hours after the incident. I then proceeded to get an air compressor and blow out any water I could (without pulling apart).
The touch screen become a little responsive but started rebooting again. I even had MORE water marks and streaks on the LCD between the touchscreen and LCD (internal)

Now this is the fix for a water damaged iPhone which might even work on Android/Samsung but not tested.
I could get the water dried, it wasn’t a hot day either. So I placed the phone on the dashboard of the car, closed all windows and got the phone as hot as possible.

After a couple of hours I went to the car and tried turning it on…. Guess what – it said TEMPERATURE TOO HOT… I thought good, lets leave it there for most of the day.

Went back 4 hours later, not only did it turn on, the screen was working perfect and even better, all the water streaks were gone. Its just like the new screen I paid $200 for 2 weeks ago on teh same phone.

Hopefully this will help someone else.

(PS I am extremely careful with my phones, and in 3 years, two incidents in two weeks… Argh!)

How secure is my password and how long will it take to crack?


This topic comes up quite a fair bit some some clients. They do not realise the risk of having simple passwords until it’s too late.

It also means people can be looking at your data without even knowing.

We recommend passwords at a minimim to be 6 characters (however we recommend 8) , and also to have upper, lower, alphanumber and special characters in the password.
The password %^@gtgTT is easier to crack than aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

The reason is only because of length not complexity.
Here is some examples of weak passwords used in 2015.

To see how hard it is to crack your password, click this link and it will take you external to our site using a calculator to see how long it takes.

Changing the window Menu Bar to a different colour instead of white like in Windows 7 so not hard to find and move windows for Windows 10


With Windows 8/8.1 this process was quite difficult and if running Windows 8/8.1, we recommend upgrading before July 29th 2016 to get free upgrade

Now, you can simply open the Settings app, navigate to Personalization > Colors, and activate the “Show color on Start, taskbar, action center, and title bar” option.
You can also choose the color you want to use from the Colors screen.


Computer not starting? Computer POST and beep codes decoded


Computer POST and beep codes

The computer POST (power-on self-test) checks a computer’s hardware for compatibility and connection before starting the remainder of the boot process. When the computer is working and passes POST, the computer may give a single or two beepsas it starts and continue to boot. If fails the POST, the computer will either not beep or generate a beep code that tells the user the source of the problem.

Below are a list of some vendors and the post code explanations.

AMI BIOS beep codes

Below are the AMI BIOS Beep codes that can occur. However, because of the wide variety of different computer manufacturers with this BIOS, the beep codes may vary.

Beep Code Descriptions
1 short DRAM refresh failure
2 short Parity circuit failure
3 short Base 64K RAM failure
4 short System timer failure
5 short Process failure
6 short Keyboard controller Gate A20 error
7 short Virtual mode exception error
8 short Display memory Read/Write test failure
9 short ROM BIOS checksum failure
10 short CMOS shutdown Read/Write error
11 short Cache Memory error
1 long, 3 short Conventional/Extended memory failure
1 long, 8 short Display/Retrace test failed
two-tone siren Low CPU Fan speed, Voltage Level issue

AWARD BIOS beep codes

Below are Award BIOS Beep codes that can occur. However, because of the wide variety of different computer manufacturers with this BIOS, the beep codes may vary.

Beep Code Description
1 long, 2 short Indicates a video error has occurred and the BIOS cannot initialize the video screen to display any additional information
1 long, 3 short Video card not detected (reseat video card) or bad video card
Beeps repeating endlessly RAM problem.
Repeated high frequency beeps while PC is running Overheating processor (CPU)
Repeated beeps alternating high & low frequency Issue with the processor (CPU), possibly damaged

If any other correctable hardware issues are found, the BIOS displays a message.

Dell beep codes

Beep Code Description
1 beep BIOS ROM corruption or failure
2 beeps Memory (RAM) not detected
3 beeps Motherboard failure
4 beeps Memory (RAM) failure
5 beeps CMOS Battery failure
6 beeps Video card failure
7 beeps Bad processor (CPU)

For other Dell beep codes, please refer to Dell’s Beep Codes and PSA Diagnostics Chart page.

IBM BIOS beep codes

Below are general IBM BIOS Beep codes that can occur. However, because of the wide variety of models shipping with this BIOS, the beep codes may vary.

Beep Code Description
No Beeps No Power, Loose Card, or Short.
1 Short Beep Normal POST, computer is ok.
2 Short Beep POST error, review screen for error code.
Continuous Beep No Power, Loose Card, or Short.
Repeating Short Beep No Power, Loose Card, or Short.
1 Long and 1 Short Beep Motherboard issue.
1 Long and 2 Short Beeps Video (Mono/CGA Display Circuitry) issue.
1 Long and 3 Short Beeps. Video (EGA) Display Circuitry.
3 Long Beeps Keyboard or Keyboard card error.
1 Beep, Blank or Incorrect Display Video Display Circuitry.

Macintosh startup tones

Tones Error
Error Tone. (two sets of different tones) Problem with logic board or SCSI bus.
Startup tone, drive spins, no video Problem with video controller.
Powers on, no tone. Logic board problem.
High Tone, four higher tones. Problem with SIMM.

Phoenix BIOS beep codes

Below are the beep codes for Phoenix BIOS

Beep Code Description and what to check
1-1-1-1 Unconfirmed beep code. Reseat RAM chips or replace RAM chips as possible solution
1-1-1-3 Verify Real Mode.
1-1-2-1 Get CPU Type.
1-1-2-3 Initialize system hardware.
1-1-3-1 Initialize chipset registers with initial POST values.
1-1-3-2 Set in POST flag.
1-1-3-3 Initialize CPU registers.
1-1-4-1 Initialize cache to initial POST values.
1-1-4-3 Initialize I/O.
1-2-1-1 Initialize Power Management.
1-2-1-2 Load alternate registers with initial POST values.
1-2-1-3 Jump to UserPatch0.
1-2-2-1 Initialize keyboard controller.
1-2-2-3 BIOS ROM checksum.
1-2-3-1 8254 timer initialization.
1-2-3-3 8237 DMA controller initialization.
1-2-4-1 Reset Programmable Interrupt Controller.
1-3-1-1 Test DRAM refresh.
1-3-1-3 Test 8742 Keyboard Controller.
1-3-2-1 Set ES segment to register to 4 GB.
1-3-3-1 28 Autosize DRAM.
1-3-3-3 Clear 512K base RAM.
1-3-4-1 Test 512 base address lines.
1-3-4-3 Test 512K base memory.
1-4-1-3 Test CPU bus-clock frequency.
1-4-2-4 Reinitialize the chipset.
1-4-3-1 Shadow system BIOS ROM.
1-4-3-2 Reinitialize the cache.
1-4-3-3 Autosize cache.
1-4-4-1 Configure advanced chipset registers.
1-4-4-2 Load alternate registers with CMOS values.
2-1-1-1 Set Initial CPU speed.
2-1-1-3 Initialize interrupt vectors.
2-1-2-1 Initialize BIOS interrupts.
2-1-2-3 Check ROM copyright notice.
2-1-2-4 Initialize manager for PCI Options ROMs.
2-1-3-1 Check video configuration against CMOS.
2-1-3-2 Initialize PCI bus and devices.
2-1-3-3 Initialize all video adapters in system.
2-1-4-1 Shadow video BIOS ROM.
2-1-4-3 Display copyright notice.
2-2-1-1 Display CPU Type and speed.
2-2-1-3 Test keyboard.
2-2-2-1 Set key click if enabled.
2-2-2-3 56 Enable keyboard.
2-2-3-1 Test for unexpected interrupts.
2-2-3-3 Display prompt Press F2 to enter SETUP.
2-2-4-1 Test RAM between 512 and 640k.
2-3-1-1 Test expanded memory.
2-3-1-3 Test extended memory address lines.
2-3-2-1 Jump to UserPatch1.
2-3-2-3 Configure advanced cache registers.
2-3-3-1 Enable external and CPU caches.
2-3-3-3 Display external cache size.
2-3-4-1 Display shadow message.
2-3-4-3 Display non-disposable segments.
2-4-1-1 Display error messages.
2-4-1-3 Check for configuration errors.
2-4-2-1 Test real-time clock.
2-4-2-3 Check for keyboard errors
2-4-4-1 Set up hardware interrupts vectors.
2-4-4-3 Test coprocessor if present.
3-1-1-1 Disable onboard I/O ports.
3-1-1-3 Detect and install external RS232 ports.
3-1-2-1 Detect and install external parallel ports.
3-1-2-3 Re-initialize onboard I/O ports.
3-1-3-1 Initialize BIOS Data Area.
3-1-3-3 Initialize Extended BIOS Data Area.
3-1-4-1 Initialize floppy controller.
3-2-1-1 Initialize hard disk controller.
3-2-1-2 Initialize local bus hard disk controller.
3-2-1-3 Jump to UserPatch2.
3-2-2-1 Disable A20 address line.
3-2-2-3 Clear huge ES segment register.
3-2-3-1 Search for option ROMs.
3-2-3-3 Shadow option ROMs.
3-2-4-1 Set up Power Management.
3-2-4-3 Enable hardware interrupts.
3-3-1-1 Set time of day.
3-3-1-3 Check key lock.
3-3-3-1 Erase F2 prompt.
3-3-3-3 Scan for F2 key stroke.
3-3-4-1 Enter SETUP.
3-3-4-3 Clear in POST flag.
3-4-1-1 Check for errors
3-4-1-3 POST done – prepare to boot operating system.
3-4-2-1 One beep.
3-4-2-3 Check password (optional).
3-4-3-1 Clear global descriptor table.
3-4-4-1 Clear parity checkers.
3-4-4-3 Clear screen (optional).
3-4-4-4 Check virus and backup reminders.
4-1-1-1 Try to boot with INT 19.
4-2-1-1 Interrupt handler error.
4-2-1-3 Unknown interrupt error.
4-2-2-1 Pending interrupt error.
4-2-2-3 Initialize option ROM error.
4-2-3-1 Shutdown error.
4-2-3-3 Extended Block Move.
4-2-4-1 Shutdown 10 error.
4-3-1-3 Initialize the chipset.
4-3-1-4 Initialize refresh counter.
4-3-2-1 Check for Forced Flash.
4-3-2-2 Check HW status of ROM.
4-3-2-3 BIOS ROM is OK.
4-3-2-4 Do a complete RAM test.
4-3-3-1 Do OEM initialization.
4-3-3-2 Initialize interrupt controller.
4-3-3-3 Read in bootstrap code.
4-3-3-4 Initialize all vectors.
4-3-4-1 Boot the Flash program.
4-3-4-2 Initialize the boot device.
4-3-4-3 Boot code was read OK.
two-tone siren Low CPU Fan speed, Voltage Level issue

Cannot RDP using OSX. RpcOverHttpEndpointException: 2, Your connection was denied because of a Resource Access Policy (TS_RAP). Please contact your server administrator


After spending many hours trying to resolve a Mac OSX system remoting to a 2012 R2 RDS/TS Server, we have found the fix.

When remoting in you may get the following error:
Cannot RDP using OSX. RpcOverHttpEndpointException: 2, Your connection was denied because of a Resource Access Policy (TS_RAP). Please contact your server administrator

This error is with Microsoft Remote Desktop on a Mac with version 8.0.28 that had been upgraded from 8.0.26.

Interestingly we didn’t have the problem on a fresh client that had 8.0.28 installed fresh and not upgraded from an earlier version.

Navigate and delete or move the following folder: (NOTE: doing so will delete all your preconfigs saved currently)


Then the next time that you load the client, you get a completely fresh client version, including first run prompts etc. You will need to re-create the profile and gateway however.

After doing that, we no longer get the ‘login failed’ popup.

It seems that something in the version upgrade doesn’t correctly upgrade the settings files, causing the issue. But a fresh setup works.

We haven’t yet found out exactly which file causes the issue however we have tested and can confirm this fix allows the system to connect and work.


Credit: Tony “tbigby” Bigby