[Solved] No Sound Satellite L645D-S4033 Laptop

I have 2 Toshiba Satellites (L645D-S4033) and both have Windows 7 x64 Ultimate installed. Operating system is up to date. Downloaded and installed the drivers from the Toshiba website. There are no question marks or exclamation points in the Device Manager and when I open the Sound properties window from the control panel, the conexant speakers is showing, defaulted, and when I play audio, the audio bar in the playback tab shows activity but there is no sound coming from the laptop speakers or headphones when plugged in. There's nothing muted and the volume is turned all the way up.
Been trying to trouble shoot this for a while, did some searching here in the forums, but with no success.
Any help is appreciated.
Thanks!
Solved!
Go to Solution.

[Solved]
In the BIOS on both laptops the Beep Sound was turned OFF. For some reason this turns off sound in Windows 7.
Turned Beep Sound ON in the BIOS and sound works as it should...
Bye the way if you have fast boot enabled and unable to enter into BIOS, hold down F2 and then power on the computer.

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Satellite X200-191 = Laptop turns on 4 seconds, black screen,humming sound

_*Satellite x200-191*_
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I take out the battery, plug it in the power. Charging light turns on.
I press the power button, power led turns on. Followed by the hdd led turn on, which blinks real quick, stays on for 1 second, then turns of. The power led stays on during all the time.
2 seconds after the power button, a fan starts blowing, while the above mention hdd led blinks for 1 second, 2 seconds after the fan starting to blow, it turns off.
We are now 4 seconds farther, pretty much, everything stopts, except a very tiny minor humming sound. (I just left it on for a couple minutes, sound remains, nothing happens.) (While writing this all I left it on for 10 minutes, the laptop heats op a bit, the adapter gets hotter, but still only the very tiny minor humming sound.)
+So my laptop works for 4 seconds, wont give any screen (black screen) wont load even BIOS. What could be wrong ?+
_*Fixing?:*_
Ok so I left the laptop after a couple of months, being told it was dead, just getting it dusty. (Read history to get this)
But since last week, I figured its getting dusty, I never opened a laptop before, why wont I try doing that.
_+*I replaced the Memory modules, Slot A and B , both memories , same time, one at a time, all possible ways.*+_
_+*Since I have only 1 HDD, I used it in both slots. Looks to no difference. Using NO HDD, I do NOT have the very tiny minor humming sound!!!*+_
I followed a guide [http://www.irisvista.com/tech/] to open my laptop, to see what is inside.
Finding no lose plugs, but did find a certein oil, and some white paste.
Closing the laptop, to try it out, I accidently screwed a couple wrong screws in the laptop, piercing the top cover of my laptop, but no chips were hit during this :P (Yeah, Im a bit to strong, I should have figured using force for a couple of the screws wasnt the best thing I could do, but now i know :p)
*SOOO* My question, while I wait for the extra old HDD (getting it in 2 days). (Probably making no difference)
What could be wrong, more precisly. Should I like try taking out the video card or something ?
Is there something I should do with some soldering?
Any tips/tricks that could work, wether to fix the laptop, or to narrow down the problem , to a small part which i could replace ?
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_*History:*_
Not sure if this is any important, but just to let you know, if intrested what happend all to the laptop ;)
I bought the laptop at Shape Computers (in the netherlands) Asking this laptop mentioned above, with 2 things changed. I wanted more Memory, and I wanted windows XP. The shop told me this was possible. They bought me the laptop in, they replaced the Memory with the kingston memories. They installed windows XP instead of the Vista. They laptop did work at this very moment. So I bought the working laptop, with 1 year warranty.
With the folders extra given with the laptop, I was able to increase my warranty from 1 to 2 years for free, so I did.
After probably a couple of weeks I noticed that the laptop was getting real hot, after longer usage. But according to the manual this was normal.
I did use the laptop for gaming, but also 2 months for a gaming study. So I did take it several times to school in a backpack.
After not using it for school anymore I reinstalled Windows Vista 32 BIT
At a very point not sure when precisly I noticed that it wouldnt turn on (probably same problem as I have now) but I was really relaxed about it, tried it later, and somehow it did work again. This happend perhaps about 5 times in total.
Knowing something was wrong, I took it back to Shape Computers. They checked it. (Not showing me what they did to it) But they told me I had nothing to worry about.
After about 2 years I actually sold this laptop to my mom. She used it a couple times (she is like realy noob, just about computers in generally, not even knowing if she should double click icons or not) She took it with her a couple times on trips, and they after about 2 years and 2 months ... this problem happend.
My mom knows a guy, and a friend of that guy, works alot with broken laptops, which told me that the problem was the _+motherboard+_.
I decided to take it back to the shop. After a long progress being down there (about 6 to 8 weeks)(Me going to the shop like 15 times). The shop managed to tell me it was the motherboard. That the motherboard couldnt be fixed and that a new one would be way to expensive.
+(I Known at this very point, after getting the motherboard back, that this laptop was not screwed open yet. The screws were still brand new.)+
Funny information(not for me), during this period of about 8 weeks, they actually told me lies like ... I left a message at your voicemail, I DONT HAVE A VOICEMAIL ... sorry for the caps but im still xxxxxx about those lies.
So still believing the shop ... my laptop is gone .... dead ... but then since last week, I started looking into the laptop myself ...(Fixing)

Ok, the company did not reply at all ... I ended up sending another email. And they did reply with a automatic message. Now weeks later still nothing more then that auto reply.
While I was waiting I contacted another guy that knows alot from these laptops. Getting a new part would cost me about 300 euros, and thats just the part, not even replace time.
Considering the toshiba help I have gotten ... (pretty much none) in these last years.
I declare my laptop dead. And decide at this very moment, that I (ofcourse) never will buy toshiba hardware again.
I might pay a bit more at my Dell computers, but the support in the last 8 years with 5 different computer systems and 1 laptop. Has been perfect in compare to the toshiba support I have gotten in the last 3 years, which just fails.
Thx tho all you guys for the replys.
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Go to Solution.

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Hi. I am running Windows 8.1 on a 64 bit Toshiba Satellite P70-A laptop with 16Gb of RAM. I have installed Adobe Creative Suite 6 - Master Collection. All is fine except for Adobe Acrobat X. It runs OK for a while, but then suddenly it won't work. I uni

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[Solved] No Sound Satellite L645D-S4033 Laptop

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