I have a 9-month old Dell PC with Windows 8. The other day, a just-purchased portable cell phone charger was plugged into one of the front slots, and I didn't use the PC anymore that day. But the next day, when I tried to plug an external drive into one of the two front slots, it didn't light up as it normally does, it didn't respond at all. I rebooted and restarted the PC, I tried other devices, nothing works in either of the two slots now. The ones in the back are all right.
All I can think of is that that portable charger somehow caused the slots to short out. I didn't see any sparks or anything unusual at all, but unless something I don't know about prior to this happened it's all I can think of. Is there anything I can do?