Fixing a faulty laptop Motherboard or CPU

The most frustrating laptop issue is no doubt the “no boot / black screen but powers on” can be caused by for a few different reasons.  But without an error code, it’s sometimes hard to tell what the issue can be.  It’s not difficult to check the basic things; swapping memory with known working models, cleaning memory ports, Ac Adapter, verifying the LCD is ok, (the list goes on and on) etc.


In some instances, especially with todays $300 disposable laptops and their “get what you pay for” quality, a faulty motherboard / solder connections to video and/or CPU could most likely be the issue.

Michele, a local Willimantic customer in Connecticut sought us out for her Inspiron M5030 throwing 7 beeps upon bootup, indicating it was a faulty CPU or CPU connection.

It’s very important to narrow down the issue before jumping to the next step, luckily in this case, Dell was kind enough to list the error codes in their service manual.

Without the error codes, its possible to narrow down the problem, but it just takes longer.

After disassembling the unit,  disconnecting and reattaching the CPU, it still wouldn’t boot with the same error codes.

The next few steps is the fun part.  Proceed with caution, we’re not responsible if you blow up your laptop, your house, or anything else that you might try to sue me for.

If you don’t feel comfortable working on your laptop, we offer mail in service or if local to CT, PC or Laptop drop off service.  If we don’t fix it, you don’t get charged.  

Contact us for more information.

Most of these motherboard, CPU/GPU repair jobs are done for around $60.

Steps to take if you want to attempt to fix it yourself

Things you’ll need:  Screwdrivers and any other tools needed to work on your laptop, a Heat Gun (needs to be able to put out around 350-400 degrees F)

Step 1.  Get all the stuff I just described together ^

Step 2.  Disassemble the laptop to reveal the part you want to work on, in this case the CPU, some laptops may require you to take the motherboard out of the unit in order to get to the CPU, GPU and Chipset,

Step 3. *IMPORTANT* Take off heatsink, clean and remove any thermal paste, and any plastic or connections / boards surrounding the CPU, GPU or Chipset.

Step 4.  Most laptops have 3 chips dedicated on board close together, locate them.

In this case:











Step 5.  Apply Heat gun for 2-3 minutes on the area in question to reflow the solder connections.

Step 6.  Reapply thermal paste (we use Arctic Silver for the best results of thermal conductivity), reattach heatsink and anything else you disconnected & boot machine to test your work.

Step 7. If the same problems exist, you may not have left the heat gun on long enough, left it on for too long, orrrrr the board is dead.  Repeat the same steps again for round 2.

If you did it correctly the end result is the following:











Questions? Contact Us or leave a comment below.


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  • I recently bought a used Dell M5030 (I should have done more research about this laptop, horrible mistake). It’s a little over a year old now. I had it for only LESS THAN 3 WEEKS. It now has the same 7 beeps error. Sadly, the previous owner will not allow me to get my refund and claims that it is myself that is at fault! Could you please help me? I am located in California and is willing to pay for your assistance! 🙁

    • sure, give us a call. you’d need to mail it out to us in CT. 860-942-8522

  • We’ve done this heatgun tactic to a few laptops with great success – but only to Nvidia GPUs. Is this 7 beep code on the M5030 a GPU or CPU issue?

    • it appears to be a socket issue with the CPU/Board on 90% of the one’s i’ve seen.

  • Just want to be clear, should I be removing the cpu before applying the heatgun? Yes?

    • yes. the issue is the connections in the actual CPU Socket.

  • Wait what do you mean remove the cpu? The thing is like attached to the whole motherboard. So like would a lighter or a blow dryer also work if i leave it on for longer?

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