Question about Computers & Internet
All the components & wires are connected but there is no power in cpu
Check your powere supply may be it damage change your power cable first then change just power supply ok best of luck .
Posted on Feb 24, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
1.Did you carefully read the motherboard owners manual?
2. Did you plug in the 4/8-pin CPU power connector located near the CPU socket? If the motherboard has 8 pins and your PSU only has 4 pins, you can use the 4-pin connector. The 4-pin connector USUALLY goes on the 4 pins located closest to the CPU. If the motherboard has an 8-pin connector with a cover over 4 pins, you can remove the cover and use an 8-pin plug if your power supply has one. This power connector provides power to the CPU. Your system has no chance of posting without this connector plugged in! Check your motherboard owners manual for more information about the CPU power connector. The CPU power connector is usually referred to as the "12v ATX" connector in the owners manual. This is easily the most common new-builder mistake.
3. Did you install the standoffs under the motherboard? Did you place them so they all align with the screw holes in the motherboard, with no extra standoffs touching the board in the wrong place? A standoff installed in the wrong place can cause a short and prevent the system from booting.
4. Did you verify that the video card is fully seated? (may require more force than a new builder expects.)
5. Did you attach all the required power connector(s) to the video card? (some need two, some need none, many need one.)
6. Have you tried booting with just one stick of RAM installed? (Try each stick of RAM individually in each RAM slot.) If you can get the system to boot with a single stick of RAM, you should manually set the RAM speed, timings, and voltage to the manufacturers specs in the BIOS before attempting to boot with all sticks of RAM installed. Nearly all motherboards default to the standard RAM voltage (1.8v for DDR2 & 1.5v for DDR3). If your RAM is rated to run at a voltage other than the standard voltage, the motherboard will underclock the RAM for compatibility reasons. If you want the system to be stable and to run the RAM at its rated specs, you should manually set those values in the BIOS. Many boards don't supply the RAM with enough voltage when using "auto" settings causing stability issues.
7. Did you verify that all memory modules are fully inserted? (may require more force than a new builder expects.) It's a good idea to install the RAM on the motherboard before it's in the case.
8. Did you verify in the owners manual that you're using the correct RAM slots? Many i7 motherboards require RAM to be installed in the slots starting with the one further away from the CPU which is the opposite of many dual channel motherboards.
9. Did you remove the plastic guard over the CPU socket? (this actually comes up occasionally.)
10. Did you install the CPU correctly? There will be an arrow on the CPU that needs to line up with an arrow on the motherboard CPU socket. Be sure to pay special attention to that section of the manual!
11. Are there any bent pins on the motherboard/CPU? This especially applies if you tried to install the CPU with the plastic cover on or with the CPU facing the wrong direction.
12. If using an after market CPU cooler, did you get any thermal paste on the motherboard, CPU socket, or CPU pins? Did you use the smallest amount you could? Here's a few links that may help:
13. Is the CPU fan plugged in? Some motherboards will not boot without detecting that the CPU fan is plugged in to prevent burning up the CPU.
14. If using a stock cooler, was the thermal material on the base of the cooler free of foreign material, and did you remove any protective covering? If the stock cooler has push-pins, did you ensure that all four pins snapped securely into place? (The easiest way to install the push-pins is outside the case sitting on a non-conductive surface like the motherboard box. Read the instructions! The push-pins have to be turned the OPPOSITE direction as the arrows for installation.) See the link in step 10.
15. Are any loose screws laying on the motherboard, or jammed against it? Are there any wires run directly under the motherboard? You should not run wires under the motherboard since the soldered wires on the underside of the motherboard can cut into the insulation on the wires and cause a short. Some cases have space to run wires on the back side of the motherboard tray.
16. Did you ensure you discharged all static electricity before touching any of your components? Computer components are very sensitive to static electricity. It takes much less voltage than you can see or feel to damage components. You should implement some best practices to reduce the probability of damaging components. These practices should include either wearing an anti-static wrist strap or always touching a metal part of the case with the power supply installed and plugged in, but NOT turned on. You should avoid building or working on a computer on carpet. Working on a smooth surface is the best if at all possible. You should also keep fluffy the cat, children, and fido away from computer components.
17. Did you install the system speaker (if provided) so you can check beep-codes in the manual? A system speaker is NOT the same as normal speakers that plug into the back of the motherboard. A system speaker plugs into a header on the motherboard that's usually located near the front panel connectors. The system speaker is a critical component when trying to troubleshoot system problems. You are flying blind without a system speaker. If your case or motherboard didn't come with a system speaker you can buy one for cheap here: http://www.cwc-group.com/casp.html
18. Did you read the instructions in the manual on how to properly connect the front panel plugs? (Power switch, power led, reset switch, HD activity led) Polarity does not matter with the power and reset switches. If power or drive activity LED's do not come on, reverse the connections. For troubleshooting purposes, disconnect the reset switch. If it's shorted, the machine either will not POST at all, or it will endlessly reboot.
19. Did you turn on the power supply switch located on the back of the PSU? Is the power plug on a switch? If it is, is the switch turned on? Is there a GFI circuit on the plug-in? If there is, make sure it isn't tripped. You should also make sure the power cord isn't causing the problem. Try swapping it for a known good cord if you have one available.
20. Is your CPU supported by the BIOS revision installed on your motherboard? Most motherboards will post a CPU compatibility list on their website.
21. Have you tried resetting the CMOS? The motherboard manual will have instructions for your particular board.
22. If you have integrated video and a video card, try the integrated video port. Resetting the bios, can make it default back to the onboard video.
23. Make certain all cables and components including RAM and expansion cards are tight within their sockets. Here's a thread where that was the cause of the problem.
hope this helps
Oct 06, 2012 | Dell Vostro 230 PC Desktop
Sep 06, 2011 | Computers & Internet
Aug 03, 2011 | HP Computers & Internet
Oct 03, 2010 | Dell Inspiron 537s PC Desktop
Sep 26, 2009 | Dell Dimension E521 PC Desktop
Sep 24, 2009 | Dell Dimension 5150 (DIM515MIN) PC Desktop
Aug 06, 2009 | Computers & Internet
Jun 21, 2009 | E-Machines (T2824) PC Desktop
May 16, 2009 | HP Computers & Internet
37 people viewed this question
Usually answered in minutes!