My PC has been having issues coming out of sleep lately. I've searched most related topics around here but couldn't find an answer to completely relate to - although I tried some of the solutions mentioned on various answers, with no luck.
I think I've identified the issue to be the GPU ( ATI HD5770 ), but I would like to confirm it as it seems to be causing troubles only coming out of sleep, otherwise it works perfectly, even with games I play at FullHD.
The first hint was one day that I moved my mouse and I got it awake but the screen was distorted. I could move the mouse but the resolution was something like 1920x600 cramped at the middle of the screen. Everything was working properly but I couldn't "fix" that without a reboot.
I updated my GPU drivers ( full uninstall/install ) to the latest, opened the tower to clean it + some blowing in the GPU and waited to see how it'll react.
Today, I tried bringing it out of sleep and while the monitor remained black, I could heard the HDD powering up, the WiFi dongle showing activity and then heard a Windows error sound.
I tried TeamViewer from my phone as I was curious if the PC was actually working and I managed to connect normally, viewing my desktop completely okay ( except that the cursor was replaced with a box of glitched pixels ) and then saw briefly a taskbar notification about a "device not properly installed". The monitor wouldn't show anything no matter what.
Could this be a software issue?