Home > Dell Latitude > Dell Latitude C640 Won't Turn On

Dell Latitude C640 Won't Turn On

The time now is 12:02 AM. Join the community here, it only takes a minute. Patricia April 1, 2007 | Sounds like a class action suit is in order bob May 19, 2007 | If the fan is working and the cpu is not reaching too I have operated a tv repair service for over 26 years so I have dealt a lot with having to redesign and make circuits work. http://windowsrefund.org/dell-latitude/dell-c640-latitude.php

Whenever i run a memory consuming process - for example downloading music, virus scan , windows update, or even play music with windows media player or winamp - or whenever i Try reseating the memory. It came with a 512mb stick installed in jdim2 which seemed odd. Similar Threads - Dell Latitude C640 Windows 7, Dell Latitude E5520. "No battery is detected" paulrroberts, Oct 9, 2016, in forum: Hardware Replies: 6 Views: 266 OverTallman Oct 28, 2016 Dell http://www.techspot.com/community/topics/dell-latitude-c640-wont-turn-on.208309/

BIOS failed, System power (3V/5V) work fine, you can measure the 3.3V and 5V on the motherboard, No electronics components have short or overheating and 3.3V on the power button, BIOS Regards Jay Shehzad July 24, 2007 | Hi, I have the same problem with my dell latitude. Hey if you end up needing to open up your case there are some great repair manuals here.

is it with the MB Regards, Shehzad S Chittenden July 25, 2007 | My battery is fine, the laptop is cool and the fan spins. CPU failures are not very common and we assume the RAM module is good, so there must be something wrong with the motherboard. I know this because we had at one time about 150 C640's. Which to me is a surprise because the laptop will sometimes freeze even in the middle of booting up.

My mom has gotten a replacement after we decided that it wasn't worth the time fixing but about a week ago I took another look. Does your fan turn on prior to the abrupt shutdown? Arbetar ... http://en.community.dell.com/support-forums/laptop/f/3518/t/18595446 Possible problem: RAM failure; your Dell Latitude C640 turns on, but the screen stays black there is no display with Power light ON and Fan ON.

If the laptop is still freezes when you test it with an external monitor, I would assume that you have a problem with the motherboard. Mark Anthony Gordora 3 244 visningar 2:21 Determining the power problem with your Dell laptop. - Längd: 3:47. No way I have that kind of skill but I have a telephone. I've rebooted a number of times and I was finally able to get it to boot up and go into windows.

I replaced the panel, tightened the captive screws and installed the center keyboard screw. https://ubuntuforums.org/showthread.php?t=883265 Saw that alot working break/fix at Dell. try another hdd those are listed in the order I'd go at it. That’s a good idea to troubleshoot a laptop this way if nothing else left.

When I plug in the power adapter the green light goes out. http://windowsrefund.org/dell-latitude/dell-latitude-d800.php Remove the battery and power cord then hold down the power button for about 20 secs. skaterd1022 354 854 visningar 3:12 How to Fix Windows 7 / windows 8 / 10 Start-up Problems - Blackscreen - Bootloop [HD] - Längd: 6:35. Install a cpu temp monitor program (such as I8kfanGUI)and monitor the cpu temps.

TechSpot Account Sign up for free, it takes 30 seconds. I've had it plugged in for about an hour. freshtcOct 28, 2011, 1:49 AM At this point I think I would retire the D600 and invest in a newer machine. this page I ran the memory testing software from a linux distro which crashed.

In all honesty, It might cook again until I find the fet or transister that is causing this overload. And to the person who asked about the amber/green flashing light, that generally indicates a battery failure. I have a problem with Dell Latitude C640 as well.

Is there a fix other than replacing the motherboard?

Anyway, any thoughts? It is simply a 3V3 voltage supervisory IC that has a typical theshold of 2.93V. Join Date Feb 2007 BeansHidden! No thanks, return to sender.

I have the same problem with one of my IBM ThinkPad notebooks. This service manual has step-by-step disassembly instructions. I am going to remove chip and place it in test circuit. Get More Info You can even unscrew it with it running and watch it come on and then screw it down and watch it turn off.

Heck it sometimes even freezes while loading the BIOS. c600 Bios cmos Clear - Längd: 6:58. Whats wrong with this fellow? It happens about 50% of the times when I try to shut down.

Remove the hard drive and see if the laptop freezes in the setup menu. 7. Tay Adam 683 772 visningar 3:36 Fun with 9 Laptops - 3 Dell 3 IBM 3 HP 1/2 - Längd: 5:28. I am running XP PRO. After the windows logo and the loading bar pass a blue screen quickly flashes up then dissapears then reboots.

It’s possible, that the memory works fine for a while when it’s cold, as soon as it warm up it fails. I found the datasheet for the U45 and it is a simple transistor PNP with an 10k resistor in the base. Have any one solve this problem ? Back to a dead laptop.

it's not the same dell laptop I have INSPIRON |5150.It seems I have the same problem I can't power on the laptop but I can see the leds light u. After a little umming and ahing I decided that I would disconnect this sensor with a sharp knife. My laptop works perfectly, and when I power up my laptop my fan doesn't spin. I tried to find a rule (twisting & stretching the MB, applying pressure on several points of it) but I found none.

Motherboard failure. So I'm quite certain that the OS is fine. The system cutoff in mid-BOOT and would not start. Main Sections Technology News Reviews Features Product Finder Downloads Drivers Community TechSpot Forums Today's Posts Ask a Question News & Comments Useful Resources Best of the Best Must Reads Trending Now

When a battery is in it and try to start it, it won't start. The HDD temperature is between 40-56C and the motherboard sensor shows no more than 52C. Motherboard fault? buddythedog, Oct 29, 2006 #2 jeffbrig Thread Starter Joined: Feb 14, 2005 Messages: 18 We've already removed and reseated the memory a couple of times, made no difference.

© Copyright 2017 windowsrefund.org. All rights reserved.