What to do if you seen a "disk boot failure" on your computer?

In one of my friend quite an old Fuji so-Siemens scaled desktop computer.

It's about 6 years old.

Recently replaced the graphics card, but now he is having another problem.

When switch the computer on, he gets the message "No signal" on the screen.

He becomes tried changing cables – no luck.

I also tried a different monitor – This time the message I got was that the screen was in power-save mode, and I need to activate it using the keyboard.

I tried to do that, but nothing happened.

I even changed the graphics card – again – but still the same problem.

Can you help me please?

I am having a problem with my printer, every time I try to print a document it returned an error cannot print this document, I try printing from word WordPad and it's the same problem. I unplug the USB cable then plug it in again, I update the drivers (Lexmark 4200 series AIO) and restart the computer, turn off and turn back on the printer same error, can someone help me. But in my computer its show printer is ready mood. I installed and uninstalled printer driver. My computer o/S is Windows XP.

I have custom built computer and it runner just fine since first couple months. Then problems started. I started to receive random blue screen errors. I have my computer on warranty so i returned it and they detected ram failure and replaced it for brand new. After couple weeks the same thing happened i returned it and they detected memory failure again and that story repeated well 4 times and problem came back after they replaced all 4 modules of my memory. Blue screen comes randomly does not matter when playing game or my computer is running. I just found general idea of component failure nothing details. I’m trying to figure out what can cause those kinds of failures and how can I possibly fix it. ?

My colleague has a computer which system board big tech motherboard; graphics card NVidia, fx55 processor. when he turn his computer on, it will stay on for the most about 2 and half  hours or at the least 2 minutes before the display on monitor distorts, lock up computer and restarts. Sometimes it would do this few times in a row before finally there's no display at all but can hear the comp running its programs as normal also PSU fan running , he confirm to listening music .what is the problem?. Here that processor fan makes load sound. Could this small fan cause it to distort display and lock up comp?

My friend’s dell laptop which model is Inspire 6000. The Adapter connection is loose. Sometimes it short circuit and the charger indicator on the laptop is turn on. When the adapter attached laptop, message shows on the task bar (where battery alert icon) that it does not charge properly.

Need to click on the message to close, sometimes its charge ok and no message appears. How can be repaired the connection because I don’t want to change the laptop or any device on it? I don’t want to buy a new one, want to repair it.

One of my office laptop which is running windows XP and model Toshiba Satellite L510. Previously I was configured windows vista on this laptop. User is not familiar to use vista so I install Windows XP.

After installed Windows XP I installed all driver that I collect from internet. Everything is ok; previously it works slow but now works fast. But now sound device does not work properly. The device manager shows sound card installed properly but sound can’t work. can you please help me to guide me?

At home I use windows XP and Windows Server 2003 operating system. Often I use Windows Server .Every time  I use Windows XP operating system, but the problem is that a have a USB  drive, my USB drive work ok on my office PC, and also on my home PC when I work in Windows Server 2003 but it does not work in windows XP, I try it same port when use windows XP and Windows Server, I use license copy antivirus, sometimes my pen drive work ok on Windows XP and occasionally can’t work what’s the problem how can I solve it?

I have a 2.6 GHz processor & 3GB RAM.

But after using some days I have to setup my operating system again to speed up my pc.

How can I speed up my system without doing this?

It starts working very slow after some weeks of setup the operating system.

I have used some of the tune up software, but it does not work.

I am so sick of it. What can I do?

Hello, I am here with a very complex problem indeed. I am a laptop user. I am using Windows XP in my laptop.

For the last few days I have been wanting to set up an Operating System on my laptop. Last day, I set to start the set up but my CD-ROM is not working. I tried a number of times but its not working. I need to set up an operating system immediately, but don’t know how? 

Can anyone help me overcome this problem? Please.