ok so basically I got a computer on ebay last week and up until now, its worked fine no problems but suddenly yesterday I clicked the windows icon in the bottom left corner of the screen (I have windows 7) and it crashed in that party of the screen an the rest was active and working but when I loaded up chrome suddenly the whole screen froze like a pc might do if you try to load a lot of applications at once.
but after this the screen went black and then a blue windows error message came up for 2 seconds and it shut its self down, now every time I turn it on I get my motherboard bios options.
what do I do?