So for a while now I've been having some issues with my computer crashing quite frequently. It only seems to do this when I'm using a web browser or a media player. I've also NOTICED that after restarting the computer the memok light flashes red briefly. I really have no idea what the issue is so even just pointing me in the right direction would be helpful. If there's any information you need just post and I'll try my best to answer. Have you RUN memtest86 on this system? The quick red flash and back to green is probably part of the initialization/test sequence in which for a narrow timeframe the system is testing the memory and it shows red until approved as OK, but it couldnt hurt to run a MEMTEST for 5 or 6 complete loops of testing to rule this out as the cause.

What Make/Model is this computer and is it running Vista or 7?

The only systems I have seen with diagnostic LEDS showing RAM (Memok) are higher end SERVERS that show a red/green LED for each memory bank, or some older DELL and IBM towers that use to have diagnostic LEDS viewable from the rear of the computer where the I/O cables plug in which were helpful for troubleshooting some issues.Download BlueScreenView:
http://www.nirsoft.net/utils/blue_screen_view.html
unzip downloaded file and double click on BlueScreenView.exe to run the program.
when scanning is done, go to EDIT - Select All
Go to FILE - SAVE Selected Items, and save the report as BSOD.txt
Open BSOD.txt in Notepad, copy all of the content, and paste it into your next replySorry to say but I have no idea what the make and model is. I checked with msinfo32 but it doesn't give me any info under system model or manufacturer. I am running windows 7 and I was able to get the blue screen information. Sorry that I can't be more HELP, but thank you for the quick response. I'll see about getting that memtest running.

==================================================
Dump File : 051813-24507-01.dmp
Crash Time : 5/18/2013 4:51:10 PM
Bug Check String :
Bug Check Code : 0x00000124
Parameter 1 : 00000000`00000000
Parameter 2 : fffffa80`054158f8
Parameter 3 : 00000000`00000000
Parameter 4 : 00000000`00000000
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+4ade0c
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.18113 (win7sp1_gdr.130318-1533)
Processor : x64
Crash Address : ntoskrnl.exe+4ade0c
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\051813-24507-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 262,144
==================================================

==================================================
Dump File : 051813-23852-01.dmp
Crash Time : 5/18/2013 4:16:06 PM
Bug Check String :
Bug Check Code : 0x00000124
Parameter 1 : 00000000`00000000
Parameter 2 : fffffa80`053da8f8
Parameter 3 : 00000000`00000000
Parameter 4 : 00000000`00000000
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+4ade0c
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.18113 (win7sp1_gdr.130318-1533)
Processor : x64
Crash Address : ntoskrnl.exe+4ade0c
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\051813-23852-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 262,144
==================================================

==================================================
Dump File : 051713-24632-01.dmp
Crash Time : 5/17/2013 11:00:22 AM
Bug Check String :
Bug Check Code : 0x00000124
Parameter 1 : 00000000`00000000
Parameter 2 : fffffa80`0541a8f8
Parameter 3 : 00000000`00000000
Parameter 4 : 00000000`00000000
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+4ade0c
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.18113 (win7sp1_gdr.130318-1533)
Processor : x64
Crash Address : ntoskrnl.exe+4ade0c
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\051713-24632-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 262,144
==================================================

==================================================
Dump File : 051713-32729-01.dmp
Crash Time : 5/17/2013 9:32:20 AM
Bug Check String :
Bug Check Code : 0x00000124
Parameter 1 : 00000000`00000000
Parameter 2 : fffffa80`053e78f8
Parameter 3 : 00000000`00000000
Parameter 4 : 00000000`00000000
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+4ade0c
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.18113 (win7sp1_gdr.130318-1533)
Processor : x64
Crash Address : ntoskrnl.exe+4ade0c
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\051713-32729-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 262,144
==================================================

==================================================
Dump File : 051513-32838-01.dmp
Crash Time : 5/15/2013 9:50:44 AM
Bug Check String :
Bug Check Code : 0x00000124
Parameter 1 : 00000000`00000000
Parameter 2 : fffffa80`053f08f8
Parameter 3 : 00000000`00000000
Parameter 4 : 00000000`00000000
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+4ade0c
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.18113 (win7sp1_gdr.130318-1533)
Processor : x64
Crash Address : ntoskrnl.exe+4ade0c
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\051513-32838-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 262,144
==================================================http://www.sevenforums.com/crash-lockup-debug-how/35349-stop-0x124-what-means-what-try.html

http://answers.microsoft.com/en-us/windows/forum/windows_7-system/blue-screen-0x00000124-and-haldll-error/bff7bb96-4b9d-4448-ac4b-6b21dcea8cd7