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Solve : Can a 3.0 Volt CMOS Battery provide enough power to boot a PC?? |
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Answer» Greetings, BC_Programmer, Yes, to this...but, not from a 3 volt CR2032 battery.BC_Programmer, Ah, so it would be possible to boot the PC from another battery. OK, perhaps a 3.0 Volt CMOS battery would not be enough... What about a ¨... bridge battery. This battery is only found within portable computers and is used as a temporary backup for the main battery. This allows you to remove the main battery and replace it with a good battery without having to turn off the computer.¨ Do you think this would provide enough power to pull it off? Jean-Pierre Quote from: dareys on July 24, 2008, 11:29:54 AM BC_Programmer, What are you trying to accomplish?BC_Programmer, I think I now know that if you leave a desktop plugged into a power supply and you have it hooked to a router with a wireless network enabled, somebody can tap into the Network card, wake the machine up and access the PC. I am trying to learn as much as I can about these posibilities to prevent the illegal access of equipment. I have suspected this for a long time. More recently, I was using a laptop that I would power down and unplug at night, only to find odd things in the morning. So I was suspecting a secondary battery might allow the startup and access as I SPECIFIED above. Paranoid? Well, if you had had the problems I have had over a long PERIOD of time you would really try to cover all the bases. Jean-Pierre Quote from: dareys on July 24, 2008, 12:23:45 PM BC_Programmer, a) Disable Wake on LAN in the BIOS, if it's an issue, and, password protect the BIOS. b) I have no clue what you are talking about with the laptop - but, you don't need another battery to access it, the laptop has one. Password protect the laptop. c) Just because you're paranoid doesn't mean that they're not after you; but, they're not powering up your desktop machines with the CMOS battery. I entered this thread with reluctance, I am now out. Best of luck! BC_Programmer, Sorry to hear you were reluctant to enter the thread... In any case, I appreciate the help and the suggestions and will give them a try. It is precisely because I am not paranoid that it never occurred to me that somebody might be after my equipment, software and electronic persona. Now, I suspect this may have been the case, perhaps for a number of years. More recently, and because I have been in the IT business for several decades, I thought I could handle things myself. You can learn anything right? I do know a fair amount about PCs and learned about Networking but it is not my specialty. Now, I think whenever I get enough cash, I might hire a black belt in NetWorking to help me really bullet proof my environment. Anyway, thank you, good luck, and be well. Jean-Pierre You continually address your posts to BC_Programmer; fyi, except for the FIRST response, you've been responding to posts from drmsucks. Not particularly noteworthy, but, I don't want BC_Programmer held responsible for anything that I might have said. If you must power off of a battery source, I'd go with a 12V Power Inverter that will create the clean 60hz sine AC at around 120VAC and wattage as great as the power inverter is rated for. For about $40 ot $50 you can get a 700Watt power inverter that will convert 12VDC to 120VAC with a maximum load of 700Watts. But the greater the draw in wattage, the quicker your 12VDC ( Car or Truck Battery ) will drain. Other use for my 700 Watt power inverter was when we had a power outage for 6 hrs at night, and I had my toyota pickup idle in the driveway with an extension cord running into the house so that I could watch TV on our smaller 13" color TV that I dug out of storage and needed about 350 watts, a box fan about 30 watts, and a florescent light, about 12 watts for 60watts of light on a hot sticky summer night a year ago after a fuse blew on the utility pole after a nasty storm and brown out... So if you get a power inverter, it has more uses than just to power a computer from battery. You could use it as am alternate power source when you have no power available.DaveLembke, Thank you for the very original response. Good luck and be well. Jean-Pierre drmsucks, I just reviewed the thread and I stand corrected. Sorry about that. It would seem that you are the one who provided me with the final suggestions to password protect the laptop (which it is), disable WOL (which it is) and password protect the BIOS (which I am going to do). I assume you do that from the standard BIOS CONFIGURATION boot time menu. Thank you. Jean-Pierre Am I mistaken to assume that you're just trying to think of other sources of power that can be used to power up a machine, and only thought of a CMOS battery as a possibility? If So, a Power inverter (or even, for short periods, a UPS), would facilitate that. However, Ithink you're also asking whether a computer can be remotely powered up without having it's power cord plugged in. Quote from: dareys on July 24, 2008, 12:23:45 PM I think I now know that if you leave a desktop plugged in and you have it hooked to a router with a wireless network enabled, somebody can tap into the Network card, wake the machine up and access the PC. I'm not sure, but I don't think a Wireless network card can be used as a WOL source, since the card itself needs to be connected to the network (facilitated with wires in the wired case) to be accessed by other computers. a more likely method would be to access the router that that wireless card is connecting to, and (possibly, if the card can recieve packets while the computer is off) somehow get it to turn on. It's possible with wired NICs, simply because their is no extra device (antenna) to power, it just needs a little standby power to monitor the network. However, a wireless card needs to essentially have full-power just to facilitate waking the computer, since it will need to remain connected to a wireless network. Quote from: dareys on July 24, 2008, 12:23:45 PM More recently, I was using a laptop that I would power down and unplug at night, only to find odd things in the morning. So I was suspecting a secondary battery might allow the startup and access as I specified above.So- are we actually talking about the laptops main battery? because that is designed to power up the laptop. In addition, bear in mind that a desktop PC, in almost all cases, requires far more power then a Laptop (for obvious reasons, not the least of which is the fact that, for the laptop, power conservation is critical to good productivity. On the other hand, Power management in desktop computers is more of a green initiative, (one with the side effect of possibly reducing electricity bills). I'm not sure if it has been mentioned, but the best way to secure a wireless network from access is to use an encrypting protocol, such as WPA or WEP. (I can't recall the good one off the top of my head. I want to say WEP, though). Quote from: dareys on July 24, 2008, 11:29:54 AM What about a ¨... bridge battery. This battery is only found within portable computers and is used as a temporary backup for the main battery. This allows you to remove the main battery and replace it with a good battery without having to turn off the computer.¨ Problem with that is that the secondary battery requires that the computer be put on standby/suspended (most do it automatically), to conserve power draw. I believe it was said before, but I believe your looking in the wrong direction. Features used to remotely boot computer can always be disabled, wireless networks can be secured, and so forth, what you're looking for (and your comments on your networking experience) sounds like you've skipped checking those alternatives(you believe that networks are capable of much more then they really are, as well- researching things on the net almost surely results in some bad information). Quote from: dareys on July 24, 2008, 06:17:27 PM drmsucks, I think, from what you have said, that I would: a) enable the password in the BIOS (yes, you're correct), b) enable a Windows password, c) look at True Crypt (http://www.truecrypt.org/). Good luck! |
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