we should not turn every post into a he said she said on whats a good computer and whats not ,cheap computer are just that Cheap!!I have 3 Dells right now for sale so they are great for now .lol

Anyway to the problem at hand ,i first suggest ccleaner to remove all temp files and such ,then use the registry cleaner section of ccleaner to clean registry ,and go to the tools section and it will show add and remove program ,may show something related to the bad video drivers ,if so uninstall it .
http://www.ccleaner.com/