A) Computer is dirty inside.Power unplugged to it, and Anti-Static Procedures FOLLOWED, the computer case Side Panel is removed; and a can, or two of compressed air for computers is used.(Attach the plastic straw provided, to the nozzle of the can of air.Break the plastic Lock Tab off of the top of the nozzle)B) Bad Power Supply.Weak voltage power rail.Test the 3 main voltages coming out of the Power Supply, with a multimeter set to DC Voltage.3.3 Volts (DC)5 Volts (DC)12 Volts (DC)In comparison two D cell flashlight batteries, produce 3 Volts DC.ALL Orange wires are 3.3 VoltsALL Red wires are 5 VoltsALL Yellow wires are 12 VoltsALL Black wires are Ground wires. (Negative. The above wires are power wires, and they are Positive)OR,Use a KNOWN to be good, Compatible power supply; for a temporary test unit. If this is the problem, you know you need a Power Supply, and can reinstall the Power Supply you borrowed back into it's computer.http://en.wikipedia.org/wiki/Computer_power_supplyhttp://en.wikipedia.org/wiki/Switched-mode_power_supplyThe DANGEROUS AC voltage is contained INSIDE, the metal case of the Power Supply.There are Electrolytic Capacitors used in the Input Stage.These may be rated to use UP TO 100 Volts.After the Power Supply is unplugged from power, these capacitors can hold a charge for weeks, months, many times OVER a year.Shock from them can be BAD to FATAL.DO NOT attempt repairing the Power Supply, UNLESS; you know how to PROPERLY discharge all capacitors FIRST!C) Bad Electrolytic Capacitors on the motherboard.Specifically, they are Radial Aluminum Electrolytic Capacitors,http://capacitorlab.com/visible-failures/index.htmhttp://www.youtube.com/watch?v=Lut7MX5Dd_AHow do they go bad?For one eMachines is a budget computer.Not a bad thing, but they use low quality Power Supply's, and Electrolytic Capacitors.For two;http://en.wikipedia.org/wiki/Capacitor_plagueBlame it on the love of a woman, who wanted to get back at an Electrolytic Capacitor company, who fired her male lover.She tried to 'borrow' the Electrolytic Paste formula, and took it to a different country, and Electrolytic Capacitor manufacturer.Unknown to her, the first Electrolytic Capacitor company caught wind of this before she did, and she unknowingly was given a bogus Electrolytic Paste formula.It doesn't have the required chemical, to keep the Electrolytic Paste from developing a gas. (Hydrogen Gas)These capacitors can operate from a few weeks, or up to a few years. Then go 'Kaput' one day.Problem started in the '70's, and is STILL plaguing us today.There is one country that is noted for it's good Electrolytic Capacitors. There is another country that has been trying to come back, from being noted it has bad capacitors.Manufacturers have been switching to Solid Capacitors for years. You will see them in the more 'high-end' products.Believe started with Tantalum Solid Capacitors, and went to Polymer Solid Capacitors.YES!They can be replaced if this is the problem, and there is a pretty good chance the motherboard will be OK.You do it? Cost is feasible, then.Pro does it? IMHO it is more feasible to just replace the motherboard. http://www.hardwaresecrets.com/article/595http://www.youtube.com/watch?v=YCSNWi3UHf4http://www.mouser.com/Search/Refine.aspx?N=12013592For additional questions please post in a Comment.Regards,joecoolvette
sir, if you have reinstalled the windows recently or have purchased the machine recently then it might be that you system does not has the hard disc partitioned into c: , d: and e: drives... to locate that your system has really those partitions present, Please follow these steps, 1) right click you myComputer 2) CLICK manage. 3) click the disc management tab in the manger
here you will see you partitions and/or any other unused space.
if there is unused space then click that space and create a new partition, format it using NTFS and your system will show e: and d: drives. Please dont forget to like and rate this solution. Thank you Fixya Team
> Are you able to access the drive from Start/Run and typing the drive-letter? Download Tweak UI and install it Start Tweak UI Click the (+) sign near the My Computer section Select Drives Put a checkmark near the drive-letters that you want to unhide Click Apply, OK
right click on my computer and select "manage", a window will open and it will show you the Partition of your harddisk, there you can comprese your c:\ again and creat your two lost drives.
To open your drive e just double click my computer. You can see an address bar there is and arrow at the right side just click it and chose the drive e to open or access. Good luck!
check incase it is for a hardisk or dvd/cd drive incase this is the case scan for hardware changes in device manager right click on my computer properties>hardware tab>device manager
incase the drive letter is replace or changed change the drive letter
Log on as Administrator or as a member of the
Administrators group.
Click Start, click Control
Panel, and then click Performance and Maintenance.
Note If you do not see Performance and Maintenance,
go to step 3. Performance and Maintenance appears in
Control Panel only if you use Category view. If you use
Classic view, Performance and Maintenance does not
appear.
Click Administrative Tools, double-click
Computer Management, and then click Disk
Management in the left pane.
Right-click the drive, the partition, the logical drive, or
the volume that you want to assign a drive letter to, and then click
Change Drive Letter and Paths.
Click Add.
Click Assign the following drive letter
if it is not already selected, and then either accept the default drive letter or
click the drive letter that you want to use.
Open your computer (make sure to take all cables out at the back of the computer) and reseat the cables attached from on your hdd (reseat means you take out the connector and put it back in). Trace the data cable (could be a wide flat gray cable or a flat slim blue cable) to the mother board and reseat that one, too. Then power on the computer.
take out all your ram and put one in the first slot turn on your system. if this does not fix it take out that ram and put another stick into the slot and power on your pc. continue this process with all your ram sticks if this does not fix your issue find a stick of ram you know works and try that
Are there any lights at all on the unit that comes on , if not then you have a defective power supply or something is "pulling it down" , best way is to unplug everything from power supply and then turn it on , if it works that way then plug back one item at a time to see which one is the faulty one.
