Question about HP Pavilion a800n (PP163AA) PC Desktop

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So i was trying to change out the ram for a better on. while doing that i decided that i was going to clean out the insides, mainly cause its never been done. also while doing this, i took out the processor to clean it out aswell. when i put it all back together, and powered it up, the fans were running and in about 5 seconds it shut down. it didnt even get to the BIOS and didnt even kick on the monitor. after shutting it down it wouldnt turn back on untill after i unpluged it and waited for a really small green light to flash on the power supply. then plug it in and try again. but nothing changed, not even after putting everything back the way it was before i took out the ram. all i need to know is, how can i just get it to run?!?!?! its been stressing me out for about 4 hours now and i just have no clue on what i can do. i think it may be a processor issue because of taking it out and putting it back in. but i have no idea. HELP ME!!!

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  • side501 Dec 25, 2008

    ive reseated the ram more times than i can remember, and i think that i may have touched the thermal paste, im not sure if that is a bad thing and ive touched it more than once.

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Are you hearing some beeping sound while turning on your computer? Is the type of your new Memory Card same as your old Memory Card? Try to check if the Power supply and Processor fan cables are properly connected on your motherboard. Take out your RAM and insert it again, make sure it is properly fitted on its slot. If you have 2 RAMs try the only one stick of RAM(Memory Card) first.

Motherboard
1. To know of your motherboard is ok then try to remove the RAM and turn it ON. If your hear error beeps then that's a good sign. Your motherboard is fine.

Memory
1. Try to clean the memory contacts using the eraser. I'm pointing about the gold contacts in the memory. Might be the dirt only that causes the problem.

Power Supply
1. Try to replace the power supply. It could be insufficient supply of power due to the lots of peripherals attached to your computer. The recommend PSU watt should be 500W to accommodate all the peripherals attach to the unit.

*Note turn off your computer while setting these up.

Posted on Dec 25, 2008

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Make sure the cpu is seated properly. It should only go in one way. Also make sure you have applied a good thermal paste between the cpu & heatsink. Check and reseat RAM. Then try rebooting. Hope this helps.

Posted on Dec 25, 2008

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dapidc
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SOURCE: HP Pavilion a800n wont boot up

I think the processor is the problem, too.
Does the board beep? How is the beep?
Just try to remove it again. Make sure everything is placed properly when you put it back.
Also try to put old RAM back, to see if it is the new RAM is OK.

Posted on Dec 25, 2008

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Continuous beeps, no display


Usually continuous beeps from an hp means the power supply unit is acting up.It is not switching on the power required for the mobo to boot up. Could also be ram prob but then the beeps tend to have a break b4 repeating. try booting with HDs disconnected. If no result. clean rams teeth with a eraser and try again. If still beeping try another power supply unit. It does not have to be identical similar will do. Once you isolate the cause of the non boot you can decide if you want to do a patch work repair or fix with originals

Oct 31, 2012 | HP Compaq dc5000 PC Desktop

Tip

10 reasons why PCs crash-You must know tip 3


3 BIOS settings

Every motherboard is supplied with a range of chipset settings that are decided in the factory. A common way to access these settings is to press the F2 or delete button during the first few seconds of a boot-up.

Once inside the BIOS, great care should be taken. It is a good idea to write down on a piece of paper all the settings that appear on the screen. That way, if you change something and the computer becomes more unstable, you will know what settings to revert to.

A common BIOS error concerns the CAS latency. This refers to the Ram. Older EDO (extended data out) Ram has a CAS latency of 3. Newer SDRam has a CAS latency of 2. Setting the wrong figure can cause the Ram to lock up and freeze the computer's display.

Mcft Windows is better at allocating IRQ numbers than any BIOS. If possible set the IRQ numbers to Auto in the BIOS. This will allow Windows to allocate the IRQ numbers (make sure the BIOS setting for Plug and Play OS is switched to 'yes' to allow Windows to do this.).

on Mar 04, 2010 | Computers & Internet

Tip

Things You Must Know To Avoid PC Crash Part 1



Fatal error: the system has become unstable or is busy," it says. "Enter to return to Windows or press Control-Alt-Delete to restart your computer. If you do this you will lose any unsaved information in all open applications."
You have just been struck by the Blue Screen of Death. Anyone who uses Mcft Windows will be familiar with this. What can you do? More importantly, how can you prevent it happening?
1 Hardware conflict
The number one reason why Windows crashes is hardware conflict. Each hardware device communicates to other devices through an interrupt request channel (IRQ). These are supposed to be unique for each device.
For example, a printer usually connects internally on IRQ 7. The keyboard usually uses IRQ 1 and the floppy disk drive IRQ 6. Each device will try to hog a single IRQ for itself.
If there are a lot of devices, or if they are not installed properly, two of them may end up sharing the same IRQ number. When the user tries to use both devices at the same time, a crash can happen. The way to check if your computer has a hardware conflict is through the following route:
* Start-Settings-Control Panel-System-Device Manager.
Often if a device has a problem a yellow '!' appears next to its description in the Device Manager. Highlight Computer (in the Device Manager) and press Properties to see the IRQ numbers used by your computer. If the IRQ number appears twice, two devices may be using it.
Sometimes a device might share an IRQ with something described as 'IRQ holder for PCI steering'. This can be ignored. The best way to fix this problem is to remove the problem device and reinstall it.
Sometimes you may have to find more recent drivers on the internet to make the device function properly. A good resource is www.driverguide.com. If the device is a soundcard, or a modem, it can often be fixed by moving it to a different slot on the motherboard (be careful about opening your computer, as you may void the warranty).
When working inside a computer you should switch it off, unplug the mains lead and touch an unpainted metal surface to discharge any static electricity.
To be fair to Mcft, the problem with IRQ numbers is not of its making. It is a legacy problem going back to the first PC designs using the IBM 8086 chip. Initially there were only eight IRQs. Today there are 16 IRQs in a PC. It is easy to run out of them. There are plans to increase the number of IRQs in future designs.
2 Bad Ram

Ram (random-access memory) problems might bring on the blue screen of death with a message saying Fatal Exception Error. A fatal error indicates a serious hardware problem. Sometimes it may mean a part is damaged and will need replacing.
But a fatal error caused by Ram might be caused by a mismatch of chips. For example, mixing 70-nanosecond (70ns) Ram with 60ns Ram will usually force the computer to run all the Ram at the slower speed. This will often crash the machine if the Ram is overworked.
One way around this problem is to enter the BIOS settings and increase the wait state of the Ram. This can make it more stable. Another way to troubleshoot a suspected Ram problem is to rearrange the Ram chips on the motherboard, or take some of them out. Then try to repeat the circumstances that caused the crash. When handling Ram try not to touch the gold connections, as they can be easily damaged.
Parity error messages also refer to Ram. Modern Ram chips are either parity (ECC) or non parity (non-ECC). It is best not to mix the two types, as this can be a cause of trouble.
EMM386 error messages refer to memory problems but may not be connected to bad Ram. This may be due to free memory problems often linked to old Dos-based programmes.
3 BIOS settings
Every motherboard is supplied with a range of chipset settings that are decided in the factory. A common way to access these settings is to press the F2 or delete button during the first few seconds of a boot-up.
Once inside the BIOS, great care should be taken. It is a good idea to write down on a piece of paper all the settings that appear on the screen. That way, if you change something and the computer becomes more unstable, you will know what settings to revert to.
A common BIOS error concerns the CAS latency. This refers to the Ram. Older EDO (extended data out) Ram has a CAS latency of 3. Newer SDRam has a CAS latency of 2. Setting the wrong figure can cause the Ram to lock up and freeze the computer's display.
Mcft Windows is better at allocating IRQ numbers than any BIOS. If possible set the IRQ numbers to Auto in the BIOS. This will allow Windows to allocate the IRQ numbers (make sure the BIOS setting for Plug and Play OS is switched to 'yes' to allow Windows to do this.).

on Feb 02, 2010 | Computers & Internet

2 Answers

My win xp home edition desktop shuts down while I'm in the middle of my work or browsing the internet and it doesn't reboot in less than ten minutes which it takes so long to do so. I tried to uninstall...


does your computer shutdown instantly, or does it have a countdown (shutdown in 10seconds, 9seconds...)
  • This could be caused by hard disk problem like bad sectors. You can resolve this by doing a thorough disk check-up operation ( right-click on your main drive in MY COMPUTER, select PROPERTIES, then TOOLS, then select CHECK NOW to check drive for errors.
  • Another cause would be spyware/malware. you need to get the most updated anti-spyware program like spydoctor and do a full scan of your PC
  • Lastly, and more advanced troubleshooting is to open your CPU case and observe all the cooling fans when your PC is on. If any one of the fans (CPU fan, Video card fan) is not working or spinning, then the overheating could cause PC to shutdown. you must have the fans replaced immediately

Oct 20, 2010 | Computers & Internet

1 Answer

When you try to turn the tower on the fans start up but nothing happens it just has one long continous beep.


probably itz either minor case of improper ground..
or major case of faulty or defective main board/RAM/addon/daughter cards..

..plz do check the following as in order:..
the Hardware part:..
1) see if the ram(s) is loose/faulty..open clean/remove carbon & or oxide formed on the teeth with an eraser n resit it..or replace with a standby n see..

2) on main/mother board..see with a debug card for mb error..may b short..look for defective capacitors(espabove1000mfd)/mosfets..go through the mb's south bridge n the circuit lie around atx connector..the crystal clock generator (if cpu isn't heating up)..

3) remove/clean dust neatly..dust is non-uniform in nature n may cause jam/short circuitry/excess resistance n many more..resulting an increase in heat..

4) unplug mains supply..pick open/remove the cmos battery..check (above +3v)..resit..

5) [in case of desktop] the smps itself may b defective/faulty..check the outputs of smps viz. 0v (black~ground); +12v(yellow); +5v (red, green~ps-on, violet~pg& grey~sb); -12v (blue);-5v(white); +3.3v(orange)..the 'oscillator and error amplifier ic',or pwm switching regulator circuit..look for defective protector-transformer/resistance (esp 4.7k)/mosfet..
check the battery n adapter [main power], in case of laptops..

6) see if ur hdd is noisy or emitting any 'ticking' noise (like 'tuk tuk' or 'kirr kirr')..or ur hdd is likely to b replaced..

for any further assistance u may plz leave comment and or testimonials at any point of time, so that i/we can help or u think it to b helpful..

if u r not a professional, always better to seek advise from ur system admin/vendor....

Feb 19, 2010 | Acer Aspire T690 (AST690UP820A) PC...

2 Answers

When i'm turn on my pc this message would appear ''bios rom chesum error'' what should i'l do?


the ram has some error 
better remove the rom blow air to it wipe it wit a clean soft  material
then replace the same 

Mar 06, 2009 | Computers & Internet

3 Answers

Computer


Hi. Thank you for being so kind as to ask me this.

This is a fairly easy answer.

The main cause of freezing in computers is that you are running too many programs, and it is using more RAM than you have installed.

SO if your computer is freezing, try installing more RAM.

Good Luck!

Feb 01, 2009 | Gateway GT5220 PC Desktop

2 Answers

HP Pavilion a800n wont boot up


it is possible you "Fried" the processor or something else. all it takes is a small static charge to kill those delicate circuits. dont wanna be all doom and gloom. i would strongly suggest you take this to a pro that can test all the hardware and find out. hopefully it's just a problem with your power supply. please let me know

Dec 25, 2008 | HP Pavilion a800n (PP163AA) PC Desktop

2 Answers

I cleaned my cpu and now when I turn it on it beeps


Ram memory usually causes the beep, check first to see if all modules are secure,

Mar 18, 2008 | E-Machines eMachines Desktop PC

2 Answers

Insufficient Memory


Dear Sir

Insufficient Memory means the RAM . Please let me know How Much ram you have. By clicking task manager within that performance tab, you can view how much being utilised etc.
for better performance you should have minimum of 256 MB.
Best Regards
Rafique

Feb 14, 2008 | Dell Dimension 2400 PC Desktop

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