Recently I've changed the fan on my computer since than i started getting multiple blue screens. I ran a disk check and used the Memory Diagnostic Tool but still came up with nothing. I have the dump files can anyone tell me what's going wrong?



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Use !analyze -v to get detailed debugging information.

BugCheck 7A, {4, 0, fffffa8004d35c10, b175fdc}

Probably caused by : win32k.sys ( win32k!BltLnkSrcCopyMsk32+b5 )

Followup: MachineOwner
the above dump file means there is a problem with the disk subsystem or a bad block in one of the sectors. It can also relate to RAM issues too but testing will prove either way.
You say you replaced a fan inside your machine? It might be worth checking all connections to the HDD just in case they have been knocked and become loose.
Above you mention about running certain tests but don't give much detail.
Try running another chkdsk but make sure it's set to look for and repair sectors. This guide whilst a little old still holds true for the most part:

You also have driver updates available. Please update your drivers using the support page here (please double check I have the correct page):

If after making the above changes you still get the bsod then you need to test your RAM.
Windows does have it's own memory testing app but it can often miss errors and the best app for the job is Memtest86. The latest version of which can be found here:

To run Memtest86 you need to either burn a copy of it to disk or use a USB stick. If you look down the page you'll eventually find the latest version and it's associated downloads. If your burning to disk choose the pre-compiled iso zip. If your using a USB method then the corresponding download is the auto installer for a USB stick.
Once you have Memtest86 on the media you selected you'll then need to enter your bios and change the boot order so that the machine will boot from either the disk or stick you have Memtest86 on.
Run the test for at least 12hrs if possible unless it becomes clear that there is a issue. If there is a problem with the RAM you'll see the errors pop up in red so you can't miss them.

Post any new dump files.

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