Also,
atikmpag.sys shows:
- timestamp
Mon Jul 18 22:32:52 2016 (578D3CF4)
- size (if I'm not wrong) 516 kB (528 384 bytes)
- I can't find the version
But the driver I extracted from
AMD Radeon Software Crimson Edition 16.7.1_X64 (NON-WHQL edition) (taken from
sapphiretech.com - HD 7850 2G D5 - downloads - windows 7 x64 (click)) shows:
- timestamp
Wednesday July 6th 2016 04:13:44
- size 486 kB (498 176 bytes)
- version 8.14.1.6512
Hence you could try to update the drivers for your graphic card with that...
Another thing you could check is if you have dust to remove inside your pc, especially from fans and air slits, and if your cpu wants a bit of new thermal past (thermal compound).
Check also the graphic card connector and its slot (remove it, clean the slot and the card connector, re-insert it).
Not sure if you can also change the thermal past on your GPU (I never did it, but it seems it's possible).