I've got an Advent computer, 650W PSU, AMD Phenom Quad Core 9550 Processor 2.20GHz, I'm not sure what other information is needed so if you need any more, please ask!
I installed a Radeon HD 4670 1GB graphics card, but failed to realise that a cable tie inside the computer was fouling the fan, preventing it from turning. I began to smell a slight burning smell, and opened the computer up, and saw that the fan on the graphics card wasn't turning, I switched it off and solved this problem. However, after this I could still smell burning.
So I took my computer to a repair shop to see what they thought was wrong. They advised me to try to get a replacement graphics card and said that my PSU wasn't suitable for the new card. So they offered to install a 650W PSU. It was a reasonable price so I took them up on it. I brought the computer home, removed the graphics card and put it in its box for going back, I then closed the box, connected the monitor, keyboard, mouse, etc. I plugged the computer in. I then switched the computer on, and there was a very loud bang, I'm not sure if there was a flash. The front light on the computer was on, but the fans and the computer weren't running. I've opened it up and I'm not sure what to do, the capacitors aren't 'bulbous' which I gather is a good thing.
I'm going to take it back to the Repair Shop tomorrow, but I'm wondering what the likelihood of me getting my computer back to as it was is. Also, is there anything I can do to fix it myself?
If you need any more details, please ask.
Thanks in advance for any help and/or advice you can give.