Bit of odd one, friend has a newish acer laptop from the end of the year, and kept finding once or twice a week Windows 8.1 would load, login but as if the user profile was corrupt, background would be changed to the yellow pyramid, files were still there but no start shortcuts etc. If they reset, then normally it would then load fine with no problems.

Decided to do a complete fresh reinstall (not using a factory image but a disc), again Window's 8.1, seemed fine initially though since a few days its started to manifest the same problems.

Obviously I checked the SMART gate for hard-drive failure, any recommendations? It's still under warranty but its bit hard to return with a vague presumably software problem? unless its a failing dim or motherboard. No apparent error.

Thanks, James