black screen

Hello, I think I **** .. I really need your help.

I have an acer netbook Ferrari One 200 series which was getting very hot (~83C after watching a flash video). I decided to clean it. So I followed the guide instructions and disassembled it (which took me a fair amount of time). I found a ton of dust at the thermal module which I removed. Then I reassembled it but when I turn it on although I can see the fan spinning and the leds powered on, I can't see anything on the screen. I checked that the screen is properly connected. I also can't hear any beep. The truth is I never heard any beep in the past (even the single one that is heard when a pc boots). But because of this I can't know if a ram has a problem from a beep code. What should I do now, how can I proceed.

The things I removed while disassebling it are these :
Hard drive and its cable
the IO cable and a similar one
the sound cable, the one which connects with the power button and the screen cable
the ram module
the keyboard
and the thermal module which I needed to clean

I checked all of them and they are fine. But which of these could produce the above problem if replaced badly? The only one I can think off is the cable which connects the screen with the MB, but I checked it twice.

 

Ok, it works now, I changed the ram module from the one slot to the other and everything seems to be fine now. Also I have low temps so its cool! Maybe I didnt place it right, I guess if I get the ram in the first slot again it will be fine.

But I have a question now, shouldn't the mb give me a warning that there is something wrong with the ram?? Why I didn't hear any beep, and why the screen was blank?

 

First, I am glad you got it going and thanks for posting a reply for that.

As for beeps, you only get beeps if the boot process can make far enough through the boot/POST process for the error to be detected and the error code and beep to be generated. My "guess" is something was not securely fastened and the boot process was interrupted too early.

 

Thanks for the answer. Still, whenever I power it up and goes through the post, why I don't hear a single beep. I always believed that every PC beeps one time when it goes successfully through the post. Is it possible that beeping is disabled from some setting (although I don't remember seeing a setting like this in bios), or maybe my mb doesn't beep at all..

I am pretty sure that I saw in the netbook manual a section with the beep codes, that logically means that the mb should be able to beep.
Also, I must clarify that the beeping problem didn't start now, I didn't hear any beeps from when I bought the pc, although I didn't gave it much though back then and I forgot it.

 

To hear the BIOS Beep codes, you must have a speaker connected directly to the motherboard and that speaker needs to be enabled in the BIOS (the normal default).

In the olden days, ALL cases came with a little speaker that connected to the front panel I/O header on the motherboard (along with the front panel switches and power LEDs).

Then some (but not all) motherboard makers started integrating tiny piezoelectric "button" speakers on some of their motherboards. At the time, some case makers stopped including case speakers (because motherboards started integrating them).

The result is many users have no speaker on their motherboard and no case speaker to connect to their motherboard so they never hear the beep.

Note the beeps do NOT come out of the normal computer speakers because those only work AFTER the operating system and sound device drivers are loaded well into the boot process - well after the beep tones.

Did you ever hear a beep?

 

I made a small batch file which produces a single beep. I hear a beep but it is from the speakers (because when I turn up the volume I can hear it louder).
Also I never remember hearing a beep from this netbook.

 

And that makes sense because your batch file is saved to the hard disk and your HD is not touched until way after POST.

 

That certain batch produces a real beep(from mb) on other PCs though.

Anyways, problem solved. My netbook can't beep at all. Thanks for the answers.

 

Sorry for double posting again, but I have some news. My netbook is able to beep. I noticed it when I tried to get into the bios settings. I had a password enabled which I accidentally typed it wrong and I heard a beep. So it can beep after all. So the two questions are still there. Why it doesn't single beep on startup. Why it didn't beep with a certain code when it didn't find the RAM. The reason I'm that concerned is that if in the future I have any problem with any certain piece of hardware I will not have the slightest idea of what is wrong(because neither the screen turns on nor the mb beeps).

 

That does not mean anything. Once the OS is running, you can program calls to that speaker. But that beep from the batch file is likely just a beep. The beep from the BIOS is a code. One beep, all is is good. More than one indicates a problem. That is, IF beep codes are supported by your BIOS.

I suspect, since netbooks are, by definition, very budget computers, they just don't include them in your netbooks.

My advice? Read your manuals and see what they say about beep codes.

My experience is beep codes rarely tell you what is wrong. They may indicate RAM, for example, but that does not say if the RAM is bad or the controller is bad or power to the RAM is bad. And of course, you need to know what the beeps mean. So again, check your manual.

 

Ok, thanks! I'll keep that in mind

 

Just for future reference, there are very few laptops/netbooks etc that beep on startup as this would be considered annoying for people using them on trains, in lectures etc. and they add physical height to the motherboard which some cases don't have room for.