ATI 5770
One game i have actually looked at - MW2
Yesterday Maxed out - 100+ FPS
Today Lowest settings - 30+FPS
Same problem with TF2
Video play back, not HD average quality AVI, 25fps at start, full screen 10-15
Only problem i have had is my Master boot drive playing up, managed to sort it out with a chkdsk, and currenty de-fragging and Virus scan.
Halp? :<
Re-installed drivers, older drivers and reset clocks to default.
Check your GPU/CPU/RAM temperatures.
Something sucking up CPU?
One time VLC decided to not just quit like normal, but silently crash while having its window disappear. I unknowingly had a vlc.exe sucking up 100% of one core until I noticed like 2 days later.
What does catalyst say for the GPU utilization? when it happens?
It's fine windowed?
I managed to fix it, down to a faulty SATA cable on my boot drive, and re-seating my card.
Just spent 2 days trying to fix that hard drive, and it was a SATA cable :I