Question about Gateway GT5438 PC Desktop

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The pc turns on but no image on screen sometimes,have changed memory modules.its seeing well you restart it and then no image,but pc is on

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For a desktop, first try the monitor on another computer, preferably with a different video cable. If it doesn't show a picture; the fault is probably at the monitor. Also try a different monitor on the Gateway.

If these two tests show that the monitor is bad, replace it to use your computer for now. (If it is under warranty, consider warranty repair. Otherwise we can try to diagnose the problem. (Common problems for an LCD monitor are the power supply, the backlight, the backlight inverter or the main board itself. The inverter is the easiest part to replace and can be tested with an oscilliscope or a multi-meter that can measure several thousand Hz.)

If you get a picture, try the monitor on the first computer with the second video cable to rule out a bad cable.

If there is still no picture, the next step is to determine if the computer has a video card installed or if you are using the on-board video. Many computers have both so try plugging the monitor into the other ports if there are any. (The on-board video is disabled when you have a video card in place. When reconnecting the cables, it can be easy to plug into the wrong spot.) Check if the monitor is working.

Replace the video card with one appropriate for your computer (you will need the specs for your computer's PSU (original specs - 300W) and card slot (PCIe x16)). You need a card that doesn't require more power than the power supply can put out. (Remember the CPU and other components need power too. Card specs will include the recommended minimum power supply needed to run the card.)

If you can, get a card that matches the existing video card. This will avoid a major problem. You need to uninstall the current video card drivers to put in a new one. You can try booting into Safe Mode by pressing F8 as you power up the computer. (This can take several tries to catch the point where the computer looks for the keystroke. You only have a few seconds.)

If you have been using the on-board graphics, get a video card. You will need to press a key (F1 or F2 for most Gateways) to enter the BIOS then disable the on-board graphics when you install the new card.

I hope this helps.

Cindy Wells

Posted on Mar 31, 2011


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My dell optiplex gx620 does not start and it shows no. 3 and 4 lights illuminated on its front . what could be the problem.?

One of your memory chips is bad.

Maybe your memory is bad or the memory slot is bad.

Remove the Power Cord, Open the Case and remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.

Diagnostic Lights caution.gif CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. To help you troubleshoot a problem, your computer has four lights labeled "1," "2," "3," and "4"on the front or back panel. The lights can be off or green. When the computer starts normally, the patterns or codes on the lights change as the boot process completes. When the computer starts normally, the patterns or codes on the lights change as the boot process completes. If the POST portion of system boot completes successfully, all four lights display solid green. If the computer malfunctions during the POST process, the pattern displayed on the LEDs may help identify where in the process the computer halted.
note.gif NOTE: The orientation of the diagnostic lights may vary depending on the system type. The diagnostic lights can appear either vertical or horizontal.

Light Pattern

Problem Description

Suggested Resolution

The computer is in a normal "off" condition, or a possible pre-BIOS failure has occurred.
The diagnostic lights are not lit after the computer successfully boots to the operating system.
Plug the computer into a working electrical outlet and press the power button.

A possible BIOS failure has occurred; the computer is in the recovery mode.
Run the BIOS Recovery utility, wait for recovery completion, and then restart the computer.

A possible processor failure has occurred.
Reinstall the processor and restart the computer.

Memory modules are detected, but a memory failure has occurred.

  • If you have one memory module installed, reinstall it and restart the computer. (see "Memory" for instructions on how to remove and install memory modules.)
  • If you have two or more memory modules installed, remove the modules, reinstall one module, and then restart the computer. If the computer starts normally, reinstall an additional module. Continue until you have identified a faulty module or reinstalled all modules without error.
  • If available, install properly working memory of the same type into your computer.
  • If the problem persists, contact Dell.

A possible graphics card failure has occurred.
  • If the computer has a graphics card, remove the card, reinstall it, and then restart the computer.
  • If the problem still exists, install a graphics card that you know works and restart the computer.
  • If the problem persists or the computer has integrated graphics, contact Dell.

A possible floppy or hard drive failure has occurred.
Reseat all power and data cables and restart the computer.

A possible USB failure has occurred.
Reinstall all USB devices, check cable connections, and then restart the computer.

No memory modules are detected.
  • If you have one memory module installed, reinstall it and restart the computer. (see "Memory" for instructions on how to remove and install memory modules.)
  • If you have two or more memory modules installed, remove the modules, reinstall one module, and then restart the computer. If the computer starts normally, reinstall an additional module. Continue until you have identified a faulty module or reinstalled all modules without error.
  • If available, install properly working memory of the same type into your computer.
  • If the problem persists, contact Dell.

Memory modules are detected, but a memory configuration or compatibility error exists.

An other failure has occurred.
This pattern also displays during System Setup and may not indicate a problem.
  • Ensure that the cables are properly connected to the system board from the hard drive, CD drive, and DVD drive.
  • Check the computer message that appears on your monitor screen.
  • If the problem persists, contact Dell.

After POST is complete, all four diagnostic lights turn green briefly before turning off to indicate normal operating condition.

Jun 06, 2012 | Dell OptiPlex GX620 PC Desktop

2 Answers

I have acer aspire 4520. Whenever i turned on the laptop, the screen will go blank. The power button is still on which means that it wasn't the motherboard problem. Sometimes, the screen turn on but after...

before you change the screen, try to plug the laptop into a monitor or any flat screen tv. are you able to view the image on the tv? if so, your screen is broken.if not, there is something wrong with your laptop and you may want to consider a system restore.

Feb 28, 2011 | Acer Aspire 4520-5582 Notebook

1 Answer

My Laptop is just a black screen with the power light the wireless internet light on and the caps lock button flashing what do i do ??? its a hp 6735s

If you have an external monitor, try the following;

1. Connect this external monitor via the VGA port at the left-hand side of your notebook.
2. Turn ON this external monitor.
3. Turn ON your notebook to see if you can see any image at this external monitor.

You may need to toggle FN+F4 to switch the image from LCD to external monitor.

If you can see image on external monitor, then either your LCD panel or the Inverter at the back of your LCD panel is defective.

If you can NOT see any image on this external monitor, your system is experiencing some kind of failure preventing it to complete the POST sequence. In this case, try to remove one piece of the memory modules from the bottom of your notebook and see if it can boot with a single memory module ( try each memory module in both memory slots and you have 4 combinations to try ) or not. It may take a long time to boot but at least it can eliminate the failure with your memory modules.
  1. Disconnect all peripheral devices and remove all USB devices and media cards. You want to test the computer not the accessories!
  2. Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds .
  3. Reconnect the AC power adapter (but do not connect the battery), Press the Power button, Look for glowing LEDs near caps lock and num lock keys, and Listen for sounds of a disk drive and fan turning.
  4. If still the problem try to check the power is fine by only using the battry to start the laptop
  5. and also check for the adapter is givibg you complite volts or no.

Dec 11, 2010 | HP Compaq 6735s Notebook

1 Answer

I tried to change the ram on my asus laptop and turned it on and screen does not show anything but laptop turns on but black screen help me?

Good day.
Memory modules are sensitive. You must take a lot of care when handling memory modules.
The first question is why did you change the ram? Nevertheless, if the one you replace is certified in good condition, then the problem lies in the insertion of the new ram. First to note is the use of correct memory module type and speed. Use of incorrect type/speed may result to errors. Secondly,clean the module's contact points using an eraser. See to it that you align the module's cut (located in the contact point) to the proper slot in the memory module's slot. Do not force to insert the memory module if it is not in the proper slot, it will break the board and/or the memory module. You can hear a slight click sound or a firm position signifying you have correctly inserted the memory module. Power on test your laptop. If you have more than one modules, you may try one another to isolate defective one.
Feel free to post your problems here at Fixya.
Good luck.


Oct 08, 2010 | Computers & Internet

1 Answer

Pc is getting restart & sometimes nothing is coming on the screen only cpu runs

The problem is usually cause by a corrupted operating system. Reinstall OS. Another possible cause is a defective memory module. Remove and reinstall your memory modules. If you have more than one module, try to reinstall one module at a time.
Good luck.


Sep 17, 2010 | HP Pavilion a1610n PC Desktop

1 Answer

Hp pavilion dv6000 multiple images horizontally and verticle lines throughout the screen.

Does the video problem occur when connected to an external monitor?
If it does then unfortunately the most likely cause is either:
1. Bad memory modules, try pulling memory chips and rotating between slots to see if any change. If necessary replace faulty memory modules.
2. there is a very large number of these HP/Compaq models that have serious problems with the Video BGA chip coming unseated from the mainboard over time.
This can be repaired by reflowing the BGA chip, but is an involved process, and not for a standard user.
Otherwise the mainboard will need to be replaced.

Jul 06, 2010 | HP Pavilion dv6000t 15.4" Notebook Laptop...

3 Answers

Random restart

This definitely sounds like the CPU is overheating, graphics card is overheating, or your memory is failing.

Check your CPU temp. and fan, and check graphics card fan.

Jan 13, 2010 | Biostar P4VTB Motherboard

1 Answer

My laptop monitor is not woking

When you plug the DC power adapter and press on the power button, the laptop starts making normal noises, the LEDs work properly but noting appears on the screen. The laptop will not start.
First of all, take a closer look at the LCD screen. Look at the screen under bright light. It’s possible that the image is still on the screen but it’s very faint.
If there is no image on the laptop LCD screen, test the laptop with an external monitor. Connect an external monitor to the VGA port on your laptop and turn the laptop on. You can toggle video output between the internal LCD screen and external monitor by pressing Fn and F4 keys simultaneously on HP laptops, Fn and F5 keys on Toshiba laptops, Fn and F7 keys on IBM laptops. Other laptops may use different key combinations.
Let’s say the external monitor works fine but the internal LCD screen has no image at all. If that’s the case, your problem could be related to the LCD screen or the video cable. Also, make sure the video cable makes good connection with the motherboard and the LCD screen. Try reconnecting, reseating the cable.
In my case, both internal and external monitors were absolutely dead. Neither of them had image. That means the problem is not related to the LCD screen or the video cable. From my experience I know that this problem could be related to the laptop memory.
Try reseating the memory module, maybe it’s not making good connection with the memory slot. Try cleaning contacts on the memory module with pen eraser. Try moving the memory module into another slot. Try replacing the memory module with another known good module, it’s possible that your original module is dead.
If you have two memory modules installed you can try removing them one by one, it’s possible that one of the modules is bad. Try installing different memory modules into different memory slots.

In my case reseating, swapping the memory module didn’t help. I was pretty confident that my problem is not memory related and I moved on.
Try removing battery, hard drive and DVD drive and turning on the laptop without these components.
Also, try turning on the laptop with an external monitor when the video cable is unplugged from the motherboard. If the laptop start with video on the external monitor, apparently there is something wrong with the laptop display panel.
Finally, disassemble the laptop and removed the motherboard.
1. Motherboard. Like on most laptops, in my case the video card is integrated into the motherboard
2. CPU with heatsink and cooling fan.
3. Known good memory module.
4. The power button board witch you need to turn on the system.
5. Working DC power adapter.

Still cannot get any video on the external monitor. The system turns on, the cooling fan starts spinning but there is no video.
At this point I’m 95% sure that the motherboard is dead. CPU failures are not very common, so it must be bad motherboard.

Oct 16, 2009 | Computers & Internet

3 Answers

System restarts automatically

1st) I would suggest disconnect EVERYTHING from the motherboard. Keep keyboard, mouse and of cause the monitor.turn on....wait your 10-15 minutes, play with the keyboard, flutzz with the mouse..
Nothing happens,TURN OFF cpu, add ONE other device, continue doing the same thing until something happens after a device is installed, that could be your problem. 2nd) your turning on and off the power supply could cause it to crash, then THAT is your problem.too Low or too high power supply voltages causes your cpu to reset in order to protect itself {By forcing the power supply to "crase & burn" u forced the issue.

Apr 23, 2008 | ASUS P5PE-VM Motherboard

2 Answers


Did you hear any beep? What's the brand/model of your motherboard? It could be a memory problem. I also experienced the same when i upgraded my memory module. Sometimes my system runs fine, but eventually it will restart... then could not open.

Try checking the memory size when your computer boots up. If it doesn't match on the total memory ram connected to your pc, then you must test each of your module (if you have many) and replace the faulty module by a new one.

Dec 17, 2007 | Computers & Internet

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