20 Most Recent Dell Optiplex 740 Desktop Desktop Computer - Page 2 Questions & Answers

That's not a problem. One light(Green one) is for power and another (Red one) is for Hard Disk. Red one will blink continuously, if hard disk is being accessed.

Search windows XP programs in Google you will find what you are looking for.

The video and audio needs drivers - if you have drivers - simply insert the media - [ CD with the stuff on it] into the CD or DVD tray and it will play.
You may have to download the drivers from Dell's main web pages - go to www.dell.com and read - you will see what to do there.

unplug monitor power cord wait for 5 minutes then turn computer off and re hook up monitor and computer if the moniter does not come on then yo have a defective video card, but you can test it with another monitor to be sure. normally if the monitor was bad it would say no signal.

I would open the case and look for popped capacitors, you can see them easily on the 740. make sure the caps are not swelling and popping. If they are under warranty, CALL DELL!!!!!!!!! If they are not under warranty, Ask dell about extended warranty availability. If you get the warranty, you can get dell to replace the boards or send a tech (like me) to replace the board on-site. If you ever do anything with any I.T. or I.S. you NEED to get the longest strongest warranty available. It pays for itself. If warranty is not an option, then do not panic. The boards in this unit are easy to replace. make sure you specify low profile if you have the smaller unit. You'll need a phillips screwdriver, and a pair of scissors (to cut a cable-tie, NOT any cables). Popped caps are a regular occurrence in many systems, and the case on these models flips open easily, so the boards are easy to inspect as well as replace.

If yahoo mail will not open in internet explorer that means that your IE version is not the latest (8 being the last ) witch is required to view the yahoo content.

well if u have windows 7 disc, then u can use that to boot the computer from the disc n then it will give u option to format the hard drive and install the new os.

u will have to boot the computer from the windows 7 bootable disc.

maybe you are experiencing dumping of physical memory. start your computer in safe mode, press power button then press f8 then select safe mode then try to uninstall the most latest software installed in your pc.

This is because of either the system has shutdown while it was processing a windows file. sometimes repairing the OS or running a CHKDSK /R in the recovery console will fix this problem. if that doesnt help i recommend you change your HDD

it is problem your computer motherboard try to usb keybord

Larry provides great information. Larry Ng Apr 30, 2022 good news the not told at all PC screen is not dead. a major fact but lacks all evidence like: 1, No PC told no OS told xp to w11 2: fans spin? all do, psu ,cpu and gpu card if fan. 3: Optiplex is a desktop 29 years of models made wow. 4: you mean Dell Splash logo. yes, and then it does the post bar, if post bar stalls that means hardware gross errors. sadly no PC model told of vast versions. wow. just wow hopeless that.? but is par here, and vast wrong answers just for that fact alone.even mine. i have many optiplex PC here old and new and my fav is 9020MT or smaller my oldest is 380(in storage) is your coin cell dead. (if yes can NOT be ignored) my dells all have F12 diagnostics, power on and hammer F12,, pick diag eSPA and run it older PCs dell if the HDD is dead the F12 diag is dead. due to being located there back long ago. my dells have a BIOS log page, go to BIOS the click tab, LOG read the logs. see what fails. (coin cell RTC sure)_ easy no?\ but why on earth post lacking the model number making any useful simple help 10 pages long for 29years of models. 1993 is the first OptiPlex, seen here. https://en.wikipedia.org/wiki/Dell_OptiP... nobody can guess and no era is the same. evolution max. ..

What is the exact error that you are getting? Do you get any blue screens? Have you installed any software recently or made any changes? I can only suggest checking the power cables and trying to use a different cable or spare if you have any for now.

Sounds like your on Google Chrome, this has started popping up since the last update and only on secure webpages at random, try running Windows Update and make sure it's up to date, it check the root certificates which should come with the windows updates.

Please see picture below

ok 960 SFF is not the same as MT or the big case MOBO.SFF has its own mobo (motherboards)it has 11x2 row non ATX spec, power . not yours as it has 12x2 some SFF have 2 diffr. moboand a dell custom PSU for just this mobo and its odd duck jack. (called PICO plug)why not buy a new PSU? that matches this PC?even the SFF PSU case is not ATX spec.https://downloads.dell.com/manuals/all-products/esuprt_desktop/esuprt_optiplex_desktop/optiplex-960_service%20manual_en-us.pdf

Go into device manager. Uninstall audio driver. Restart computer. This will reinstall the default driver. Try again. If it doesn't work, go to Dell website to find specific driver for your computer (using the service tag) and install that.

Desktops PCs usually have a 'jumper' on the motherboard, inside of the PC, that resets the BIOS, removing the password but also changing some settings to their defaults. It takes some 'know how' but you can google it to help you locate it.

What are you talking about? Video card?