I have an old Compaq Evo laptop that has been used sparingly for a few years as a company computer at home. But i decided to make it into a home computer, so i installed a new XP operating system, uploaded office, then plugged it into my broadband modem to download avast! antivirus software. I downloaded the setup file to desktop, ran it, and everything was going fine for a few minutes then a yellow warning triangle appeared in the right of the taskbar, the mouse froze and the lapto shutdown and now wont reboot. I've plugged it into the power supple and it wont even recognise itself as charging, and just tries to reboot every10 seconds or so of its own accord but the lights just flash on and off stright away with a small clickiing sound.
If this is important, this occurred on the first time the laptop has been used away from it's power suply dock in a year or so.
Any help very much appreciated!