Member Avatar for NimishaG

Hi there,

I am having a problem with my Sony Vaio laptop PCG-K315B, with Intel Celeron D, Processor 340, 2.93 GHz, Harddrive 40 GB/Go, RAM 512 MB/Mo. I have had it for over 2 years now.

It makes a really loud noise as I am using it and also gets hot very quickly. I maybe using it and then out of the blue it just shuts off automatically, with no prior warning.
It has been going for awhile, and I have learnt to use it for awhile but then to let it cool off for 10 minutes or so before I start using it again. Its just getting really frustrating now and I really need to sort it out!

I think the problem is with the fan but don't know know how to repair this or what to do.
I would really appreciate any advice.

Thanks.

NimishaG

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Dani AI

Generated

A short diagnostic note for the PCG-K315B thread: the symptoms reported by (loud fan noise, rapid heating and abrupt shutdown) match several distinct failure modes that other posters have suggested. Replies from , and point toward cooling-path problems; the checklist below focuses on confirming the root cause and on low-risk tests to do before buying parts or taking the machine fully apart.

  1. Check system logs (Windows Event Viewer → Windows Logs → System) for unexpected shutdown entries (Kernel‑Power events) and timecodes to correlate with use.
  2. Run a hardware monitor (for example, HWMonitor or Open Hardware Monitor) to log CPU temperature and any reported fan RPMs during idle and under load; note how quickly temps rise.
  3. Inspect active processes (Task Manager) and run a malware/AV scan — sustained 80–100% CPU load from a process will raise temperatures fast.
  4. Reproduce the problem outside Windows (boot a Linux live USB); recurrence there points to hardware rather than OS/software.
  5. If comfortable with simple electrical checks, observe whether the fan receives voltage at its connector when powered on; no voltage suggests a board/BIOS/power issue rather than a seized bearing.
  6. As a quick functional test, lower the processor maximum (Windows advanced power plan → Processor power management → Maximum processor state) to reduce heat output while diagnosing.

If diagnostics isolate a hardware fault, compare the replacement-part cost and availability (fan assembly or service manual, as noted) against the laptop’s remaining value. When opening the case, remove AC and battery, use ESD precautions, and keep screws and plastic clips organized. If in doubt, a local repair shop can confirm the fault cheaply and avoid accidental damage.

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Member Avatar for danzona

I don't have the same model VAIO that you do, but it does sound like you have a broken fan. The system probably has an override that shuts down when it gets too hot to prevent damage.

You can disassemble the box and look at the fan. This will be a bit of a pain because there will be many screws to remove. There are usually arrows pointing to the screws, which helps (remember to check under the feet!).

Alternatively, there are laptop bases that you can buy which have built in fans and some type of thermal material to keep the bottom cool. These are generally for laptops that get too warm to put on your lap, but it may help if you can't find replacement parts.

Good luck!

Member Avatar for AndrewRoss

Hi, I am having the same problem with my g/f's laptop. Vaio K315b. I bought the dissassembly manual from ebay, but I haven't got around to fixing it for her yet. If you want I will send you a copy to help you taking it apart.

Member Avatar for neil58

Hi, I am having the same problem with my g/f's laptop. Vaio K315b. I bought the dissassembly manual from ebay, but I haven't got around to fixing it for her yet. If you want I will send you a copy to help you taking it apart.

Hi, Andrew,any chance of a copy of those instructions?
I have a dead 325b sony as well.
<Snip>
Regards
Neil

Edited by crunchie because: Removed email address.
Member Avatar for cr81gps

Hi, I had the same problem with my sony vaio over heating and the proccesor running at 100% most of the time, I took it apart and replaced the thermal paste on the cpu and now it works great no more over heating. A good place to get a step by step guide is at www.insidemylaptop.com.
hope this has been helpfull. Craig

Member Avatar for neil58

Hi, Andrew,any chance of a copy of those instructions?
I have a dead 325b sony as well.

Regards
Neil

That would be great if you would send them to my email
<Snip>
Thanks very much

Edited by crunchie because: Removed email address
Member Avatar for laur3nr

i have the same problem. my VAIO laptop turns on, then the fan will not spin, then after about 45mins of useing it, it just over heats and shuts off. :( it gets soo hot sometimes that it burns to touch it. :sweat: ive had it for years, mabe its time for and upgrade? :-/

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