A buddy gave me a 4 slot usb reader. as soon as I plugged it into my usb port, my computer shut down. I removed the usb and it powered back on but it would not respond or show anything on the monitor. I unplugged it for a few minutes hoping it would reset but it did not. The fans run and it powers on, but it will not boot up. Upon further reveiw I realized the usb reader calls for a 5v- 2.5 a power cord. I used a 12v 1000ma power cord. I am sure this is the cause of the problem. I opened the CPU to see if I could find a blown fuse or evidence of something burnt up but I see no fuses, nor do I smell or see anything burnt. Any help as to what my next step should be would be greatly appreciated! I really don't want to take it to the shop. Any other recommendations? Thanks!
2007-03-15 12:21:11 · 4 answers · asked by nattibadboy 2 in Computers & Internet ➔ Hardware ➔ Add-ons
1) is anything comming to the screen.. soon you power on the computer ?
If its not, then probably the high voltage from the USB reader may harm the internal circuits. obviously you wont feel any burned smell because all internal circuits operate with 2.8 V to 3.8 V, Motors - 5 V.
As you can see, you gave relatively a high voltage. (5 V vs 12 V) Even 6V for a enough period of time could burn internal circuits.
2) There wont be any fuse for a usb port.
3) Remember, when technicians do internal repairs, it is recomended to be connected to a grounded wire to eliminate statics, even a small static electricity could damage a silicon circuit.
4) if the computer show a POST screen, then it can be something different.
if its nothing at all, sorry to say, you probably have to buy a new motherboard.
Try this, There is a battery inside your computer, remove it for few minutes (say 10 minutes) and put it back and try to restart. it will reset your computer's CMOS setup.
2007-03-15 12:40:14 · answer #1 · answered by LabradorRetreiver 1 · 1⤊ 0⤋
I had same problem like that before. Scree was black fans working hard drive not working and same with cdrom drive.
It was the powersupply. I have a power supply tester so i hooked it up no light. no light bad power supply. I am pretty sure thats what the problem is.
2007-03-15 12:26:04 · answer #2 · answered by Saleen VS Corvette 3 · 1⤊ 0⤋
i've got been thinking awhile approximately this, yet i won't have the ability to come to a decision what might reason this. you have have been given to take your computing device in someplace to obtain expert help. i'm sorry, it extremely is all i will allow you to already know.
2016-10-18 11:52:23 · answer #3 · answered by ? 4 · 0⤊ 0⤋
a cheap USB reader. he gave it to you free for a reason. throw it out. i had this problem. if you want a decent USB hub, pay for a good one my friend
2007-03-15 12:29:37 · answer #4 · answered by Anonymous · 1⤊ 1⤋