Figure out Why a Computer Won't Boot

How to Figure out Why a Computer Won't Boot(1)

This article tells you the basics of how to determine if there is faulty hardware in a computer and/or if you have configuration problems.

Steps

1.Turn off your computer. Make sure that all of your wires in the front and back I/O panels are securely plugged in.

2.Turn back on your computer. Observe.

3.If the computer simply does not turn on, or you get stopped at a screen with white writing and a black background, and does not say "Windows" anywhere in it, it is a hardware problem. Shut down your computer again and go to step 4. If you get stopped at a screen that says "windows" anywhere in it, and it asks you to choose an option for booting, read the directions on that page and select the choice based on them.

4.If you are not good with computers, skip to step 7. If you are comfortable with working with the inside of computers, turn it back on and get in the BIOS. From here you should be able to set everything back to normal. If you have overclocked, set your FSB and vCore down to stock levels. If your BIOS has the button, you can press "restore to factory settings" instead of having to go through every menu. This button should be near the back of the bios and is lodged between "exit and save changes" and "exit and discard changes."

5.Try to start the machine up again. If the computer didn't start up in the first place, check the power switch lead. These little buggers can frequently get unknowingly moved to adjacent pins if you're not careful. If your power switch lead is in the exact right place, check your ATX 12v auxiliary connector. It is a common mistake for people to leave this unplugged.

6.If nothing is working, take the little battery out of the motherboard (should be near the southbridge) and wait 2 minutes for it to fully discharge. Remember, you must have the power cord unplugged to do this. (You should never have cords attached to the back when you're working on a computer.) If you know which jumper on your motherboard is the clear CMOS jumper, you can just move that to the other two pins and wait 5-10 seconds to clear your CMOS. If absolutely nothing works, try taking all of the parts out and putting them back in. This shouldn't be just one by one. Take all of them out, lay them on a table, and put them back in, making sure to connect all necessary wires. Also, make sure you're grounded by simply touching the power supply every 5 minutes or so.

the article source:http://www.wikihow.com/Figure-out-Why-a-Computer-Won%27t-Boot

Lithium-ion rechargeable battery in the right ways

Lithium-ion rechargeable battery in the right ways(3)

2, in normal use when the charge should be In our forums, often see this as the number of

charging and discharging is limited, so should the cell phone battery power used up as much as

possible and then charge. But I find on a lithium-ion battery charge and discharge cycle test

table, on the life cycle of figures is as follows: Life cycle (10% DOD):> 1000 times Life cycle

(100% DOD):> 200 times DOD is the depth of the discharge of which the initials. Can be seen

from the table, the number of rechargeable and about the depth of discharge, 10% DOD at the

time of the life cycle than 100% DOD's a lot longer. Of course, if the actual charge equivalent to

the total capacity of the relative: 10% * 100 = 1000 100% * 200 = 200, which is the complete

charge and discharge, or better than some, but in front of friends do say that some of the

amendments: Under normal circumstances, you should have a reservation in accordance with

the remaining battery power and then run out of charge to the principle Charge, but if your

battery is expected in the first 2 days you can not To adhere to the whole day, should start on

time charge, of course, if you are willing to carry another charger to the office when Bielun.

the article source:http://www.digi163.com/blog/post/102.html