|"dell 2400 dimension"|
Dell Dimension 2400 Series
Service manual - View (html version)
Read that to see if you have any symptoms that indicate there is a problem, e.g. an error pattern of diagnostic lights (leds).
NOTE that we recently had a guy start a Topic here who had a Dimension 2400, and he had 4 diagnostic lights (leds) that were yellow, which is not shown.
His problem was his PS/2 keyboard was malfunctioning, probably because of one or more broken wires inside it's cord.
When he tried a different keyboard, the keyboard and the system worked fine.
"the mouse and keyboard are wired PS2 connections."
The PS/2 connector on the end of the cord MUST be all the way into the PS/2 port BEFORE you boot the computer.
If it's loose in the port, prop up the cord so that it's end connector goes straight in.
The PS/2 connectors must be plugged into the proper PS/2 port on a desktop computer - the keyboard PS/2 port is usually purple, the mouse's PS/2 port is usually green.
PS/2 connected devices are NOT "hot pluggable" - they should be plugged in ONLY when the computer is NOT running, otherwise the circuits of the PS/2 port can be damaged. That said, I have encountered only ONE case of damaged PS/2 port circuits on a mboard - on that mboard a USB keyboard must be used.
A simple gender adapter you use to convert a cord with a male USB connector on it's end to PS/2 port use will NOT work, unless
- the keyboard or mouse is a "combo" one that was designed and wired up to be used with either a USB or PS/2 port
- you use the right gender adapter. A gender adapter for a keyboard, usually colored purple, will usually NOT work with a "combo" mouse, and a gender adapter for a mouse, usually colored green, will usually NOT work with a "combo" mouse
keyboard, because the gender adapter does not have the necessary connections internally.
"When the computer started up in safe mode, I could no longer move the mouse and the keyboard wouldn't function. I have restarted the computer many times hitting F8 and or F12 following other posts on here and the keyboard is functioning, but once I get to the login screen nothing works."
A PS/2 keyboard and mouse should ALWAYS work in ANY mode you load Windows into.
For corded keyboards and mice, it's very common for one or more wires to get broken inside the cord, usually near where it enters the device, after they have been used a lot, or at any time of the cord has been yanked on. If the insulation of the broken wire is still intact, the connection of that wire is intermittent rather than being reliable - when the wire ends touch each other, you can have all sorts of bizarre symptoms - when the wire ends are not touching each other the keyboard or mouse will NOT work.
When you wiggle the cord near where it enters the device, the keyboard or mouse MAY work when the cord is in certain positions, NOT work when it is in other positions.
Try a different keyboard or mouse.
If no PS/2 keyboard or mouse works, you have the rare case of the PS/2 port's circuits are damaged - you will have to use a USB keyboard or mouse.
"The computer was running slow and had some pop-ups right before the W32blasterworm appeared."
Slowness can be caused by many things, and most of them are not malware.
"That virus would not allow me to go online to download any programs to solve the virus issue.I was reading on my other computer on this site to start up in safe mode and that would allow me to maybe be able to connect to the internet....."
Safe mode with networking is what you needed to try, not plain Safe mode which does not load networking support, in case you or the program needs to access the internet.
Safe mode or Safe mode with networking does not load a lot of things that are loaded when you boot normally, so sometimes the same problems don't appear when you use them , but usually if the malware is interfering with you using your internet browser when you boot normally, it does that in those modes too.
If you download the program installation file needed to get rid of the malware on another computer, then copy it to a flash drive, then plug the flash drive into the computer that has a problem with malware, while Windows is running in normal mode or in Safe mode with networking, you don't need to use your internet browser if the program requires internet access, and when the window pops up the screen (that always pops up when you insert a flash drive while Windows is running) you can choose to Open the Folder for the flash drive, and you can choose to copy the program installation file needed to get rid of the malware onto the desktop (main desktop screen), and click on it to install it.