So my pc was running very hot and i thought i shoud clean everything inside the cpu..
I removed the cpu heatsink and fan and there was some green thing which was not thermal pate on cpu as well as processor top...
I tried hard to remove it with cotton cloth but didnt work..
So I took a sand paper and rubbed it on both cpu and heatsink...
Now when I turn on the computer all fans are running and motherboard LED is also on but NO DISPLAY is showing..
Even BIOS setup isnt opening..
I also turned PSU fan from pushing air outside to pulling air inside,,\
Also i didnt wear anything for static electricity..
Can anyone tell me something about what has happened and what can I try now,,,
I tried CMOS update by removing battery as well but didnt work
HELP!!